Round 23 fix: skip test on transient kubectl error

test_revoke_non_resource_url_rule_is_removed's post-revoke clusterrole
fetch fell through to json.loads('') when kubectl returned neither
NotFound nor valid JSON (network blip, auth error). Raise skipTest in
that case, matching the _auth_can_i pattern the other new integration
tests use.

Author: anniegracehu

tests/test_provider_kubeconfig.py

@@ -1108,6 +1108,8 @@ def test_revoke_non_resource_url_rule_is_removed(self):
             role_out_after, role_err_after = _run_command("kubectl get clusterrole " + sa + " -o json" + self.kubeconfig_flag)
             if role_err_after and "NotFound" in role_err_after:
                 pass
+            elif not role_out_after:
+                self.skipTest(f"transient kubectl error reading clusterrole: {role_err_after.strip()}")
             else:
                 role_obj_after = json.loads(role_out_after)
                 self.assertFalse(