Merge branch 'master' into 't32350-improve_benchmark_role'

.gitlab-ci.yml

Makefile

doc/deploy-ha.md

global-conf.sh

packer/scripts/upgrade.sh

roles/celerity/tasks/main.yml

roles/ceph-rbd/tasks/main.yml

roles/mediaserver/tasks/main.yml

roles/mediaworker/tasks/main.yml

roles/mirismanager/tasks/main.yml

roles/ocfs2/tasks/main.yml

roles/postgres-ha/defaults/main.yml

roles/postgres-ha/tasks/main.yml

roles/sysconfig/handlers/main.yml

roles/sysconfig/tasks/main.yml

set_app_domain.py

site-ha.yml

site.yml

tests/test_mediaworker.py