Add playbooks and scripts to aid in performing maintainence on hypervisors
These may be used to perform package updates that require a reboot:
- disable compute service (nova-compute-disable.yml)
- live migrate VMs away (nova-compute-drain.yml)
- reboot (reboot.yml)
- enable compute service (nova-compute-enable.yml)
They may also be used to drain a compute node before a rebuild:
- disable compute service (nova-compute-disable.yml)
- live migrate VMs away (nova-compute-drain.yml)
- stop services (kayobe overcloud service stop)
(cherry picked from commit 45fb5c60)