Merge branch 't38273-extract-roles-reconfigurations' into 'main'

roles/live/tasks/install.yml

roles/live/tasks/main.yml

roles/live/vars/main.yml

roles/lxc/README.md

roles/lxc/defaults/main.yml

roles/lxc/tasks/base.yml

roles/lxc/tasks/install.yml

roles/lxc/tasks/main.yml

roles/mediacache/README.md

roles/mediacache/defaults/main.yml

roles/mediacache/tasks/base.yml

roles/mediacache/tasks/configure.yml

roles/mediacache/tasks/configure/live.yml

roles/mediacache/tasks/configure/local-resolution.yml

roles/mediacache/tasks/configure/nginx-live-upstream.yml

roles/mediacache/tasks/configure/nginx-vhost.yml

roles/mediacache/tasks/configure/nginx-vod-upstream.yml

roles/mediacache/tasks/configure/vod.yml

roles/mediacache/tasks/install.yml

roles/mediacache/tasks/main.yml