Low: ui_cluster: Document wait_for_startup

* Rename 'cluster wait' to 'wait_for_startup'
* Add documentation for the command
Low: package: Return result in dict
Low: ui_cluster: Replace the ansible banner output function
Low: ui_cluster: Update status full to call do_install
Low: ui_cluster: Add reload command
Low: playbooks.base: Restructured into a single playbook
Low: playbooks.csync2: Add csync2 playbook
Low: command: Try not to shadow names in outer scope
Low: ui_cluster: Add command describe
Low: playbooks: Add readmes, WIP transition to automatic node discovery