mgr/dashboard: fix OAuth2 SSO when roles_path is empty

Fixes https://tracker.ceph.com/issues/70454

Due to PR linter updates, this place remained not updated hence failing

Signed-off-by: Afreen Misbah <[email protected]>

Author: afreen23

src/pybind/mgr/dashboard/services/auth/oauth2.py

@@ -93,7 +93,7 @@ def get_user_roles(cls):
         except AttributeError:
             raise cherrypy.HTTPError(401)
 
-        if jmespath and hasattr(mgr.SSO_DB.config, 'roles_path'):
+        if jmespath and getattr(mgr.SSO_DB.config, 'roles_path', None):
             logger.debug("Using 'roles_path' to fetch roles")
             roles = jmespath.search(mgr.SSO_DB.config.roles_path, jwt_payload)
         # e.g Keycloak