This commit introduces the ability to pass a playbook and playbook
values file to the dcmanager subcloud add command. The deployment
is now split into two phases: bootstrapping, where the bootstrap
ansible playbook is run with the supplied bootstrap values yaml file,
and deploying, where the specified ansible playbook is executed with
the given yaml values file pointing to the subcloud.
Change-Id: I2ff3034b1db88d9da89e634220a394ab9dfce64b
Story: 2004766
Task: 36712
Signed-off-by: Tyler Smith <tyler.smith@windriver.com>