- Task-based deployment support.
- Hot-plug and LCM support (Experimental).
- Updated documentaion.
- Cleaned up puppet.
- Refactored deployment_tasks.yaml
- Removed all stuff related to default MOS backends.
9.0 has built-in multibackend, so just add new backend.
Change-Id: Ia885d1a931f2111bdd3e9e1dccec07d34e42d2f0