Use only token to query the RBAC

Author: upadhyeammit

ros/lib/kessel/kessel_client.py

@@ -124,7 +124,8 @@ def default_workspace(self):
             LOG.info(f"Fetching default workspace from RBAC API: {rbac_workspaces_url}")
 
             try:
-                access_token = auth_credentials.get_token()
+                token_result = auth_credentials.get_token()
+                access_token = token_result[0]
                 headers = {
                     "authorization": f"Bearer {access_token}",
                     "x-rh-rbac-org-id": str(self.org_id)