move clusters tabs .nav-controls to ee namespace

app/views/projects/clusters/index.html.haml

@@ -8,12 +8,7 @@
     .top-area.adjust
       .nav-text
         = s_("ClusterIntegration|Clusters can be used to deploy applications and to provide Review Apps for this project")
-      .nav-controls
-        - if @project.feature_available?(:multiple_clusters)
-          = link_to s_("clusterintegration|add cluster"), new_project_cluster_path(@project), class: "btn btn-success btn-add-cluster has-tooltip js-add-cluster"
-        - else
-          = link_to s_("ClusterIntegration|Add cluster"), new_project_cluster_path(@project), class: "btn btn-success btn-add-cluster disabled has-tooltip js-add-cluster", title: s_("ClusterIntegration|Multiple clusters are available in GitLab Entreprise Edition Premium and Ultimate")
-    .ci-table.js-clusters-list
+      = render 'projects/ee/clusters/buttons', project: @project
       .gl-responsive-table-row.table-row-header{ role: "row" }
         .table-section.section-30{ role: "rowheader" }
           = s_("ClusterIntegration|Cluster")

ee/app/views/projects/ee/clusters/_butons.html.haml

+.nav-controls
+  - if project.feature_available?(:multiple_clusters)
+    = link_to s_("ClusterIntegration|Add cluster"), new_project_cluster_path(project), class: "btn btn-success btn-add-cluster has-tooltip js-add-cluster"
+  - else
+    = link_to s_("ClusterIntegration|Add cluster"), new_project_cluster_path(project), class: "btn btn-success btn-add-cluster disabled has-tooltip js-add-cluster", title: s_("ClusterIntegration|Multiple clusters are available in GitLab Entreprise Edition Premium and Ultimate")