Fixing test failure

Author: S-Saranya1

core/sdk-core/src/test/java/software/amazon/awssdk/core/internal/http/pipeline/stages/ApplyUserAgentStageTest.java

@@ -60,7 +60,7 @@ public class ApplyUserAgentStageTest {
                                  (HttpSigner<Identity>) Mockito.mock(HttpSigner.class),
                                  AuthSchemeOption.builder().schemeId("mock").build());
 
-    private static final String PROVIDER_SOURCE = "ProcessCredentialsProvider";
+    private static final String PROVIDER_SOURCE = "w";
     private static final AwsCredentialsIdentity IDENTITY_WITHOUT_SOURCE =
         AwsCredentialsIdentity.create("akid", "secret");
 
@@ -149,7 +149,7 @@ public void when_identityContainsProvider_authSourceIsPresent() throws Exception
 
         List<String> userAgentHeaders = request.headers().get(HEADER_USER_AGENT);
         assertThat(userAgentHeaders).isNotNull().hasSize(1);
-        assertThat(userAgentHeaders.get(0)).contains("auth-source#proc");
+        assertThat(userAgentHeaders.get(0)).contains("m/w");
     }
 
     private static HttpClientDependencies dependencies(String clientUserAgent) {