Merge branch 'failback-redis-unicorn' into 'master'

Inverse unicorn and redis steps in failback

See merge request gitlab-com/migration!194

.gitlab/issue_templates/failback.md

@@ -119,11 +119,11 @@ outside world
 
 1. [ ] ↩️ {+ Fail-back Handler +}: Reconfigure every changed gstg node
     1. bundle exec knife ssh roles:gstg-base "sudo chef-client"
-1. [ ] ↩️ {+ Fail-back Handler +}: Clear cache on gstg web nodes to correct broadcast message cache
-    * `sudo gitlab-rake cache:clear:redis`
 1. [ ] ↩️ {+ Fail-back Handler +}: Restart Unicorn and Sidekiq
     * `bundle exec knife ssh 'roles:gstg-base AND omnibus-gitlab_gitlab_rb_unicorn_enable:true' 'sudo gitlab-ctl restart unicorn'`
     * `bundle exec knife ssh 'roles:gstg-base AND omnibus-gitlab_gitlab_rb_sidekiq-cluster_enable:true' 'sudo gitlab-ctl restart sidekiq-cluster'`
+1. [ ] ↩️ {+ Fail-back Handler +}: Clear cache on gstg web nodes to correct broadcast message cache
+    * `sudo gitlab-rake cache:clear:redis`
 1. [ ] ↩️ {+ Fail-back Handler +}: Verify database replication is working
     1. Create an issue on the Azure site and wait to see if it replicates successfully to the GCP site
 1. [ ] ↩️ {+ Fail-back Handler +}: Verify https://gstg.gitlab.com reports it is a secondary in the blue banner on top