Merge branch 'docs/build-45-consul-pgbouncer-pgpass-host' into 'master'

Correct the host used for consul->pgbouncer pgpass

Closes gitlab-org/build/team-tasks#45

See merge request gitlab-org/gitlab-ee!3426

doc/administration/high_availability/alpha_database.md

@@ -444,7 +444,7 @@ Repeat the above steps on all secondary nodes.
    reload pgbouncer. Confirm `PGBOUNCER_PASSWORD` twice when asked:
 
      ```sh
-     gitlab-ctl write-pgpass --host PGBOUNCER_HOST --database pgbouncer --user pgbouncer --hostuser gitlab-consul
+     gitlab-ctl write-pgpass --host 127.0.0.1 --database pgbouncer --user pgbouncer --hostuser gitlab-consul
      ```
 
 1. Ensure the node is talking to the current master: