Chef roles cleanup - July 2017
Here's some roles that we should review and delete if not needed:
base-freebsd
datametrics-ssh-sudo
gitlab-bacula
gitlab-base-lb-backend
gitlab-canary-git-data-storage
gitlab-checkmk-plugin-redis
gitlab-checkmk-server
gitlab-cluster-db-replication
gitlab-cluster-db
gitlab-cluster-redis-master
gitlab-cluster-redis-slave
gitlab-cluster-redis
gitlab-oauth2-proxy-checkmk
gitlab-staging-worker-mailroom
staging-base-lb-altssh
staging-base-lb-pages
staging-base-storage-nfs