Being able to schedule custom tasks for all agents

Weekly tasks like wiping the local maven repository or update the agent's binary capabilities we still have to do manually or provisioned. Therefor we need the agents to be disabled or even shut down.

While wiping the GIT cache I just saw

Scheduling deletion of selected Git Caches on agents: linux_agent21_1 (2), linux_agent21_2 (2), linux_agent21_3 (2), linux_agent21_4 (2), linux_agent21_5 (2) (....)

It would be very nice if we could schedule custom tasks for all agents across a big agent farm and even better if these could be normal bamboo tasks (e.g. ant/maven execution)