Fix flaky test

Fixes https://gitlab.com/gitlab-org/gitlab/-/issues/450267

ee/app/services/ci/runners/create_google_cloud_provisioning_steps_service.rb

@@ -60,6 +60,7 @@ def validate
 
         ServiceResponse.error(
           message: s_('Runners|The deployment name is invalid'),
+          payload: { deployment_name: deployment_name },
           reason: :internal_error
         )
       end

ee/spec/services/ci/runners/create_google_cloud_provisioning_steps_service_spec.rb

@@ -7,7 +7,7 @@
 
   let_it_be(:group) { create(:group) }
   let_it_be(:project) { create(:project) }
-  let_it_be(:runner) { create(:ci_runner, :project, projects: [project]) }
+  let_it_be(:runner) { create(:ci_runner, :project, projects: [project], token: 'v__x-zPvFbogsYEgaCq-') }
   let_it_be(:group_maintainer) { create(:user, maintainer_of: group) }
   let_it_be(:project_maintainer) { create(:user, maintainer_of: project) }
   let_it_be(:group_owner) { create(:user, owner_of: group) }