OpenShift install docs: Recommend "add-scc-to-user" over "edit scc"

doc/install/openshift_and_gitlab/index.md

@@ -464,7 +464,9 @@ bother us. In any case, it is something to keep in mind when deploying GitLab
 on a production cluster.
 
 In order to deploy GitLab on a production cluster, you will need to assign the
-GitLab service account  to the `anyuid` Security Context.
+GitLab service account to the `anyuid` [Security Context Constraints][scc].
+
+For OpenShift v3.0, you will need to do this manually:
 
 1. Edit the Security Context:
    ```sh
@@ -477,6 +479,12 @@ GitLab service account  to the `anyuid` Security Context.
 
 1. Save and exit the editor
 
+For OpenShift v3.1 and above, you can do:
+
+```sh
+oc adm policy add-scc-to-user anyuid system:serviceaccount:gitlab:gitlab-ce-user
+```
+
 ## Conclusion
 
 By now, you should have an understanding of the basic OpenShift Origin concepts
@@ -513,3 +521,4 @@ PaaS and managing your applications with the ease of containers.
 [autoscaling]: https://docs.openshift.org/latest/dev_guide/pod_autoscaling.html "Documentation - Autoscale"
 [basic-cli]: https://docs.openshift.org/latest/cli_reference/basic_cli_operations.html "Documentation - Basic CLI operations"
 [openshift-docs]: https://docs.openshift.org "OpenShift documentation"
+[scc]: https://docs.openshift.org/latest/admin_guide/manage_scc.html "Documentation - Managing Security Context Constraints"
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