Rename SovSG → GovSG in Common module, Fixes AB#3565148 (#3068)

The Singapore sovereign cloud was incorrectly named "SovSG" — the
correct branding is "GovSG". This is a pure identifier rename; the
hostname `login.sovcloud-identity.sg` is unchanged.

### Production code
- **`AzureActiveDirectoryCloud.java`**: `SOVSG_CLOUD_HOST` →
`GOVSG_CLOUD_HOST`, `SOVSG` → `GOVSG`, JavaDoc updated
- **`AzureActiveDirectory.java`**: import, `KNOWN_CLOUD_DISCOVERY_HOSTS`
entry, and `preSeedSovereignClouds()` reference updated

### Tests
- `AzureActiveDirectoryCloudTest.kt` — test functions, local variable
`sovsg` → `govsg`, all constant references
- `AzureActiveDirectoryTest.kt` — `testIsKnownCloudDiscoveryHost_sovsg`
→ `_govsg`
- `AzureActiveDirectoryAuthorityCloudTest.kt` — three test functions and
local variables renamed
- `AuthorityKnownAuthorityTest.kt` — comment and test function renamed

### Changelog
- Added a `[PATCH]` entry to `changelog.txt` under `vNext` noting the
rename.

<!-- START COPILOT CODING AGENT SUFFIX -->



<!-- START COPILOT ORIGINAL PROMPT -->



<details>

<summary>Original prompt</summary>

> ## Rename SovSG to GovSG in Common module
> 
> Fixes
[AB#3565148](https://identitydivision.visualstudio.com/fac9d424-53d2-45c0-91b5-ef6ba7a6bf26/_workitems/edit/3565148)
> 
> ### Objective
> Rename all occurrences of **SovSG** to **GovSG** in the Common module.
The Singapore sovereign cloud was incorrectly named "SovSG" — the
correct term is "GovSG".
> 
> ### Context
> The sovereign cloud constants and instances in
`AzureActiveDirectoryCloud.java` use the incorrect abbreviation "SovSG"
for the Singapore sovereign cloud. This needs to be corrected to "GovSG"
across all production code and associated tests. The actual hostname
`login.sovcloud-identity.sg` is correct and must NOT be changed.
> 
> ### Technical Requirements
> 
> #### 1. AzureActiveDirectoryCloud.java
> Path:
`common4j/src/main/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryCloud.java`
> - Rename constant `SOVSG_CLOUD_HOST` to `GOVSG_CLOUD_HOST` (line 127).
The string value `"login.sovcloud-identity.sg"` must NOT change.
> - Update JavaDoc comment: `SovSG sovereign cloud` to `GovSG sovereign
cloud` (line 144)
> - Rename static instance `SOVSG` to `GOVSG` (line 145)
> - Update all references to `SOVSG_CLOUD_HOST` within the instance
constructor call (lines 146-148) to `GOVSG_CLOUD_HOST`
> 
> #### 2. AzureActiveDirectory.java
> Path:
`common4j/src/main/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectory.java`
> - Rename import: `import static
...AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST` to `GOVSG_CLOUD_HOST`
(line 31)
> - Rename usage in `KNOWN_CLOUD_DISCOVERY_HOSTS` set:
`SOVSG_CLOUD_HOST` to `GOVSG_CLOUD_HOST` (line 119)
> - Rename usage in `preSeedSovereignClouds()`:
`AzureActiveDirectoryCloud.SOVSG` to `AzureActiveDirectoryCloud.GOVSG`
(line 137)
> 
> #### 3. AzureActiveDirectoryCloudTest.kt
> Path:
`common4j/src/test/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryCloudTest.kt`
> - Rename test function `testSovsgCloudHostConstant()` to
`testGovsgCloudHostConstant()`
> - Update reference `AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST` to
`AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST`
> - Rename test function `testSovsgCloudInstance()` to
`testGovsgCloudInstance()`
> - Rename local variable `val sovsg` to `val govsg` and all its usages
> - Update all `AzureActiveDirectoryCloud.SOVSG` to
`AzureActiveDirectoryCloud.GOVSG`
> - Update all `AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST` to
`AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST`
> 
> #### 4. AzureActiveDirectoryTest.kt
> Path:
`common4j/src/test/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryTest.kt`
> - Rename test function `testIsKnownCloudDiscoveryHost_sovsg()` to
`testIsKnownCloudDiscoveryHost_govsg()`
> 
> #### 5. AzureActiveDirectoryAuthorityCloudTest.kt
> Path:
`common4j/src/test/com/microsoft/identity/common/java/authorities/AzureActiveDirectoryAuthorityCloudTest.kt`
> - Rename test functions:
`testIsSameCloudAsAuthority_bothSovsg_returnsTrue` to `bothGovsg`,
`bleuVsSovsg` to `bleuVsGovsg`, `delosVsSovsg` to `delosVsGovsg`
> - Rename local variables `val sovsg` to `val govsg` and all usages
> - Update all `SOVSG_CLOUD_HOST` to `GOVSG_CLOUD_HOST`
> 
> #### 6. AuthorityKnownAuthorityTest.kt
> Path:
`common4j/src/test/com/microsoft/identity/common/java/authorities/AuthorityKnownAuthorityTest.kt`
> - Update comment: `(SovSG)` to `(GovSG)`
> - Rename test function `testIsKnownAuthority_sovsgSovereignCloud()` to
`testIsKnownAuthority_govsgSovereignCloud()`
> - Update reference `AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST` to
`AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST`
> 
> ### Acceptance Criteria
> - All `SOVSG`, `SovSG`, `sovsg`, `Sovsg` identifiers and comments in
common4j are renamed to `GOVSG`, `GovSG`, `govsg`, `Govsg` respectively.
> - The actual hostname string `login.sovcloud-identity.sg` is NOT
changed anywhere.
> - All existing tests pass after the rename (run `./gradlew
:common4j:test`).
> - No logic changes — this is purely a naming fix.
> - Follow .github/copilot-instructions.md strictly.
> 


</details>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: mohitc1 <22034758+mohitc1@users.noreply.github.com>

Author: Copilot

changelog.txt

@@ -1,5 +1,6 @@
 vNext
 ----------
+- [PATCH] Rename SovSG to GovSG for the Singapore sovereign cloud identifiers (#3068)
 
 Version 24.1.0
 ----------

common4j/src/main/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectory.java

@@ -28,7 +28,7 @@
 import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.DELOS_CLOUD_HOST;
 import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.PPE_CLOUD_HOST;
 import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.PUBLIC_CLOUD_HOST;
-import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST;
+import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST;
 import static com.microsoft.identity.common.java.providers.microsoft.azureactivedirectory.AzureActiveDirectoryCloud.US_GOV_CLOUD_HOST;
 
 import com.google.gson.Gson;
@@ -116,7 +116,7 @@ public class AzureActiveDirectory
             US_GOV_CLOUD_HOST,
             BLEU_CLOUD_HOST,
             DELOS_CLOUD_HOST,
-            SOVSG_CLOUD_HOST
+            GOVSG_CLOUD_HOST
     )));
 
     static {
@@ -134,7 +134,7 @@ private static void preSeedSovereignClouds() {
         for (final AzureActiveDirectoryCloud cloud : new AzureActiveDirectoryCloud[]{
                 AzureActiveDirectoryCloud.BLEU,
                 AzureActiveDirectoryCloud.DELOS,
-                AzureActiveDirectoryCloud.SOVSG
+                AzureActiveDirectoryCloud.GOVSG
         }) {
             sAadClouds.put(
                     cloud.getPreferredNetworkHostName().toLowerCase(Locale.US),

common4j/src/main/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryCloud.java

@@ -124,7 +124,7 @@ void setIsValidated(final boolean isValidated) {
     public static final String US_GOV_CLOUD_HOST = "login.microsoftonline.us";
     public static final String BLEU_CLOUD_HOST = "login.sovcloud-identity.fr";
     public static final String DELOS_CLOUD_HOST = "login.sovcloud-identity.de";
-    public static final String SOVSG_CLOUD_HOST = "login.sovcloud-identity.sg";
+    public static final String GOVSG_CLOUD_HOST = "login.sovcloud-identity.sg";
 
     // These are added without network calls because they are not part of instance discovery yet.
     /** Bleu sovereign cloud (France). */
@@ -141,10 +141,10 @@ void setIsValidated(final boolean isValidated) {
             Collections.singletonList(DELOS_CLOUD_HOST)
     );
 
-    /** SovSG sovereign cloud (Singapore). */
-    public static final AzureActiveDirectoryCloud SOVSG = new AzureActiveDirectoryCloud(
-            SOVSG_CLOUD_HOST,
-            SOVSG_CLOUD_HOST,
-            Collections.singletonList(SOVSG_CLOUD_HOST)
+    /** GovSG sovereign cloud (Singapore). */
+    public static final AzureActiveDirectoryCloud GOVSG = new AzureActiveDirectoryCloud(
+            GOVSG_CLOUD_HOST,
+            GOVSG_CLOUD_HOST,
+            Collections.singletonList(GOVSG_CLOUD_HOST)
     );
 }

common4j/src/test/com/microsoft/identity/common/java/authorities/AuthorityKnownAuthorityTest.kt

@@ -56,12 +56,12 @@ class AuthorityKnownAuthorityTest {
     }
 
     /**
-     * Verifies that a sovereign cloud authority (SovSG) is recognized as known.
+     * Verifies that a sovereign cloud authority (GovSG) is recognized as known.
      */
     @Test
-    fun testIsKnownAuthority_sovsgSovereignCloud() {
+    fun testIsKnownAuthority_govsgSovereignCloud() {
         val authority = Authority.getAuthorityFromAuthorityUrl(
-            "https://${AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST}/common"
+            "https://${AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST}/common"
         )
         assertTrue(Authority.isKnownAuthority(authority))
     }

common4j/src/test/com/microsoft/identity/common/java/authorities/AzureActiveDirectoryAuthorityCloudTest.kt

@@ -51,9 +51,9 @@ class AzureActiveDirectoryAuthorityCloudTest {
     }
 
     @Test
-    fun testIsSameCloudAsAuthority_bothSovsg_returnsTrue() {
-        val authority1 = createAuthority(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST)
-        val authority2 = createAuthority(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST)
+    fun testIsSameCloudAsAuthority_bothGovsg_returnsTrue() {
+        val authority1 = createAuthority(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST)
+        val authority2 = createAuthority(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST)
         assertTrue(authority1.isSameCloudAsAuthority(authority2))
     }
 
@@ -65,16 +65,16 @@ class AzureActiveDirectoryAuthorityCloudTest {
     }
 
     @Test
-    fun testIsSameCloudAsAuthority_bleuVsSovsg_returnsFalse() {
+    fun testIsSameCloudAsAuthority_bleuVsGovsg_returnsFalse() {
         val bleu = createAuthority(AzureActiveDirectoryCloud.BLEU_CLOUD_HOST)
-        val sovsg = createAuthority(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST)
-        assertFalse(bleu.isSameCloudAsAuthority(sovsg))
+        val govsg = createAuthority(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST)
+        assertFalse(bleu.isSameCloudAsAuthority(govsg))
     }
 
     @Test
-    fun testIsSameCloudAsAuthority_delosVsSovsg_returnsFalse() {
+    fun testIsSameCloudAsAuthority_delosVsGovsg_returnsFalse() {
         val delos = createAuthority(AzureActiveDirectoryCloud.DELOS_CLOUD_HOST)
-        val sovsg = createAuthority(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST)
-        assertFalse(delos.isSameCloudAsAuthority(sovsg))
+        val govsg = createAuthority(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST)
+        assertFalse(delos.isSameCloudAsAuthority(govsg))
     }
 }

common4j/src/test/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryCloudTest.kt

@@ -38,8 +38,8 @@ class AzureActiveDirectoryCloudTest {
     }
 
     @Test
-    fun testSovsgCloudHostConstant() {
-        assertEquals("login.sovcloud-identity.sg", AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST)
+    fun testGovsgCloudHostConstant() {
+        assertEquals("login.sovcloud-identity.sg", AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST)
     }
 
     @Test
@@ -67,21 +67,21 @@ class AzureActiveDirectoryCloudTest {
     }
 
     @Test
-    fun testSovsgCloudInstance() {
-        val sovsg = AzureActiveDirectoryCloud.SOVSG
-        assertNotNull(sovsg)
-        assertEquals(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST, sovsg.preferredNetworkHostName)
-        assertEquals(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST, sovsg.preferredCacheHostName)
-        assertNotNull(sovsg.hostAliases)
-        assertEquals(1, sovsg.hostAliases.size)
-        assertEquals(AzureActiveDirectoryCloud.SOVSG_CLOUD_HOST, sovsg.hostAliases[0])
-        assertTrue(sovsg.isValidated)
+    fun testGovsgCloudInstance() {
+        val govsg = AzureActiveDirectoryCloud.GOVSG
+        assertNotNull(govsg)
+        assertEquals(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST, govsg.preferredNetworkHostName)
+        assertEquals(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST, govsg.preferredCacheHostName)
+        assertNotNull(govsg.hostAliases)
+        assertEquals(1, govsg.hostAliases.size)
+        assertEquals(AzureActiveDirectoryCloud.GOVSG_CLOUD_HOST, govsg.hostAliases[0])
+        assertTrue(govsg.isValidated)
     }
 
     @Test
     fun testSovereignCloudInstancesAreDistinct() {
         assertNotEquals(AzureActiveDirectoryCloud.BLEU, AzureActiveDirectoryCloud.DELOS)
-        assertNotEquals(AzureActiveDirectoryCloud.BLEU, AzureActiveDirectoryCloud.SOVSG)
-        assertNotEquals(AzureActiveDirectoryCloud.DELOS, AzureActiveDirectoryCloud.SOVSG)
+        assertNotEquals(AzureActiveDirectoryCloud.BLEU, AzureActiveDirectoryCloud.GOVSG)
+        assertNotEquals(AzureActiveDirectoryCloud.DELOS, AzureActiveDirectoryCloud.GOVSG)
     }
 }

common4j/src/test/com/microsoft/identity/common/java/providers/microsoft/azureactivedirectory/AzureActiveDirectoryTest.kt

@@ -65,7 +65,7 @@ class AzureActiveDirectoryTest {
     }
 
     @Test
-    fun testIsKnownCloudDiscoveryHost_sovsg() {
+    fun testIsKnownCloudDiscoveryHost_govsg() {
         assertTrue(AzureActiveDirectory.isKnownCloudDiscoveryHost("login.sovcloud-identity.sg"))
     }