Add sovereign cloud enum values and update GetCloudUrl method

Co-authored-by: bgavrilMS <12273384+bgavrilMS@users.noreply.github.com>

Author: Copilot

src/client/Microsoft.Identity.Client/AppConfig/AuthorityInfo.cs

@@ -261,6 +261,12 @@ internal static string GetCloudUrl(AzureCloudInstance azureCloudInstance)
                     return "https://login.microsoftonline.de";
                 case AzureCloudInstance.AzureUsGovernment:
                     return "https://login.microsoftonline.us";
+                case AzureCloudInstance.AzureBleu:
+                    return "https://login.sovcloud-identity.fr";
+                case AzureCloudInstance.AzureDelos:
+                    return "https://login.sovcloud-identity.de";
+                case AzureCloudInstance.AzureGovSG:
+                    return "https://login.sovcloud-identity.sg";
                 default:
                     throw new ArgumentException(nameof(azureCloudInstance));
             }

src/client/Microsoft.Identity.Client/AppConfig/AzureCloud.cs

@@ -31,5 +31,20 @@ public enum AzureCloudInstance
         /// US Government cloud. Maps to https://login.microsoftonline.us
         /// </summary>
         AzureUsGovernment,
+
+        /// <summary>
+        /// Azure Bleu sovereign cloud (France). Maps to https://login.sovcloud-identity.fr
+        /// </summary>
+        AzureBleu,
+
+        /// <summary>
+        /// Azure Delos sovereign cloud (Germany). Maps to https://login.sovcloud-identity.de
+        /// </summary>
+        AzureDelos,
+
+        /// <summary>
+        /// Azure GovSG sovereign cloud (Singapore). Maps to https://login.sovcloud-identity.sg
+        /// </summary>
+        AzureGovSG,
     };
 }

tests/Microsoft.Identity.Test.Unit/AppConfigTests/PublicClientApplicationBuilderTests.cs

@@ -358,6 +358,12 @@ public void EnsureCreatePublicClientWithAzureAdMyOrgAndValidTenantSucceeds()
         [DataRow(AzureCloudInstance.AzureChina, AadAuthorityAudience.AzureAdMultipleOrgs, "https://login.chinacloudapi.cn/organizations/", DisplayName = "AzureChina + AzureAdMultipleOrgs")]
         [DataRow(AzureCloudInstance.AzureChina, AadAuthorityAudience.AzureAdAndPersonalMicrosoftAccount, "https://login.chinacloudapi.cn/common/", DisplayName = "AzureChina + AzureAdAndPersonalMicrosoftAccount")]
         [DataRow(AzureCloudInstance.AzureChina, AadAuthorityAudience.PersonalMicrosoftAccount, "https://login.chinacloudapi.cn/consumers/", DisplayName = "AzureChina + PersonalMicrosoftAccount")]
+        [DataRow(AzureCloudInstance.AzureBleu, AadAuthorityAudience.AzureAdMultipleOrgs, "https://login.sovcloud-identity.fr/organizations/", DisplayName = "AzureBleu + AzureAdMultipleOrgs")]
+        [DataRow(AzureCloudInstance.AzureBleu, AadAuthorityAudience.AzureAdAndPersonalMicrosoftAccount, "https://login.sovcloud-identity.fr/common/", DisplayName = "AzureBleu + AzureAdAndPersonalMicrosoftAccount")]
+        [DataRow(AzureCloudInstance.AzureDelos, AadAuthorityAudience.AzureAdMultipleOrgs, "https://login.sovcloud-identity.de/organizations/", DisplayName = "AzureDelos + AzureAdMultipleOrgs")]
+        [DataRow(AzureCloudInstance.AzureDelos, AadAuthorityAudience.AzureAdAndPersonalMicrosoftAccount, "https://login.sovcloud-identity.de/common/", DisplayName = "AzureDelos + AzureAdAndPersonalMicrosoftAccount")]
+        [DataRow(AzureCloudInstance.AzureGovSG, AadAuthorityAudience.AzureAdMultipleOrgs, "https://login.sovcloud-identity.sg/organizations/", DisplayName = "AzureGovSG + AzureAdMultipleOrgs")]
+        [DataRow(AzureCloudInstance.AzureGovSG, AadAuthorityAudience.AzureAdAndPersonalMicrosoftAccount, "https://login.sovcloud-identity.sg/common/", DisplayName = "AzureGovSG + AzureAdAndPersonalMicrosoftAccount")]
         public void TestAuthorityPermutations(
             AzureCloudInstance cloudInstance,
             AadAuthorityAudience audience,