Apache needs gitlab-git-http-server on TCP

doc/update/7.14-to-8.0.md

@@ -168,6 +168,7 @@ git diff origin/7-14-stable:lib/support/nginx/gitlab origin/8-0-stable:lib/suppo
 ```
 
 If you are using Apache instead of NGINX please see the updated [Apache templates](https://gitlab.com/gitlab-org/gitlab-recipes/tree/master/web-server/apache).
+Also note that because Apache does not support upstreams behind Unix sockets you will need to let gitlab-git-http-server listen on a TCP port. You can do this via [/etc/default/gitlab](https://gitlab.com/gitlab-org/gitlab-ce/blob/8-0-stable/lib/support/init.d/gitlab.default.example#L34).
 
 ### 9. Migrate GitLab CI to GitLab CE/EE