test: Configuring ITDatabaseRolePermissionTest to use SpannerOptions … (#2304)

* test: Configuring ITDatabaseRolePermissionTest to use SpannerOptions from testHelper class

* style: lint

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Author: gauravpurohit06

google-cloud-spanner/src/test/java/com/google/cloud/spanner/it/ITDatabaseRolePermissionTest.java

@@ -100,7 +100,8 @@ public void grantAndRevokeDatabaseRolePermissions() throws Exception {
             .get(5, TimeUnit.MINUTES);
 
     // Connect to db with dbRoleParent.
-    SpannerOptions options = SpannerOptions.newBuilder().setDatabaseRole(dbRoleParent).build();
+    SpannerOptions options =
+        testHelper.getOptions().toBuilder().setDatabaseRole(dbRoleParent).build();
 
     Spanner spanner = options.getService();
     DatabaseClient dbClient = spanner.getDatabaseClient(createdDatabase.getId());