Fix broken spec in ee/spec/features/projects/clusters_spec.rb

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27189
changed the frontend to display the cluster details only after it
has been created. To make the feature spec, we force the cluster
to be in the created state.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/13258

ee/spec/features/projects/clusters_spec.rb

@@ -123,6 +123,11 @@ describe 'EE Clusters', :js do
             fill_in 'cluster[provider_gcp_attributes][zone]', with: 'us-central1-a'
             fill_in 'cluster[provider_gcp_attributes][machine_type]', with: 'n1-standard-2'
             click_button 'Create Kubernetes cluster'
+
+            # The frontend won't show the details until the cluster is
+            # created, and we don't want to make calls out to GCP.
+            provider = Clusters::Cluster.last.provider
+            provider.make_created
           end
 
           it 'user sees a cluster details page' do