Copy k8s service integration info into clusters

Now that the k8s service is being deprecated in favor of the
Clusters integration, copy all info from the old to the new page.

doc/user/project/integrations/kubernetes.md

@@ -2,11 +2,15 @@
 last_updated: 2017-12-28
 ---
 
-CAUTION: **Warning:**
-Kubernetes service integration has been deprecated in GitLab 10.3. If the service is active the cluster information still be editable, however we advised to disable and reconfigure the clusters using the new [Clusters](../clusters/index.md) page. If the service is inactive the fields will be uneditable. Read [GitLab 10.3 release post](https://about.gitlab.com/2017/12/22/gitlab-10-3-released/#kubernetes-integration-service) for more information.
-
 # GitLab Kubernetes / OpenShift integration
 
+CAUTION: **Warning:**
+The Kubernetes service integration has been deprecated in GitLab 10.3. If the
+service is active, the cluster information will still be editable, however we
+advise to disable and reconfigure the clusters using the new
+[Clusters](../clusters/index.md) page. If the service is inactive, the fields
+will not be editable. Read [GitLab 10.3 release post](https://about.gitlab.com/2017/12/22/gitlab-10-3-released/#kubernetes-integration-service) for more information.
+
 GitLab can be configured to interact with Kubernetes, or other systems using the
 Kubernetes API (such as OpenShift).