HADOOP-17725. Keep MSI tenant ID and client ID optional (ADDENDUM)

Author: virajjasani

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java

@@ -812,9 +812,9 @@ public AccessTokenProvider getTokenProvider() throws TokenAccessProviderExceptio
               FS_AZURE_ACCOUNT_OAUTH_MSI_ENDPOINT,
               AuthConfigurations.DEFAULT_FS_AZURE_ACCOUNT_OAUTH_MSI_ENDPOINT);
           String tenantGuid =
-              getMandatoryPasswordString(FS_AZURE_ACCOUNT_OAUTH_MSI_TENANT);
+              getPasswordString(FS_AZURE_ACCOUNT_OAUTH_MSI_TENANT);
           String clientId =
-              getMandatoryPasswordString(FS_AZURE_ACCOUNT_OAUTH_CLIENT_ID);
+              getPasswordString(FS_AZURE_ACCOUNT_OAUTH_CLIENT_ID);
           String authority = getTrimmedPasswordString(
               FS_AZURE_ACCOUNT_OAUTH_MSI_AUTHORITY,
               AuthConfigurations.DEFAULT_FS_AZURE_ACCOUNT_OAUTH_MSI_AUTHORITY);