Deploy the "build all active branches" system

Originally created by @intrigeri on #8658 (Redmine)

This builds on top of #8656 (closed).

This includes having the set of Jenkins jobs refreshed regularly and automatically, cleaning up those that are not needed anymore, as well as their build artifacts.

Feature Branch: puppet-tails:feature/8656-deploy_the_build_all_active_branches_system

Parent Task: #6196 (closed)

Related issues

• Blocked by tails#8654 (closed)
• Blocked by #8656 (closed)
• Blocked by #8912 (closed)
• Blocked by #9350 (closed)