This update contains the following misc. config changes to
support ansible bootstrap for system controller.
Creates deps model for dcmanager and dcorch puppet modules.
Creates a system controller postgres run time manifest which is
applied upon the creation of initial controller host or replay after
the distributed cloud role has been changed.
The patch_vault file system is created during the first controller
unlocked.
And allows the dc role to be modified during bootstrap.
Change-Id: Id7b416274b2a854c469bfdca7448bf1ddea639d7
Story: 2004766
Task: 35650
Signed-off-by: Tao Liu <tao.liu@windriver.com>