Change-Id: I0e8b16bba5c826a97a4e9bd07891f5f3fb549334
Partially-implements: blueprint better-reconfigure

Useful for upgrade etc., which is preferablly done serially.

Example usage: tools/kolla-ansible deploy OR tools/kolla-ansible upgrade

Closes-Bug: #1576708

DocImpact

Change-Id: I34b2e16f8ce53e472a4682a4738c4ac0f5abf00c

This could possibly use gold plating in how bootstrapping
operates to use shade rather than the shell in the container.
It is unclear why stack create failed prior to this patch, but
that fact hasn't changed.  I think the heat domains are not setup
properly in the configuration files, meaning that the domain ID
must be created outside of Heat and registered in the configuration
file.  This is covered in Bug #1553565.

Change-Id: I490d4dd68a101f388c0ecb4acab54d5eaa6e314e
Partially-Implements: blueprint kolla-upgrade
Implements: blueprint upgrade-heat

After introduction of pull action and turing every main.yml into
{{action}}.yml we lost ability to perform upgrade.

Change-Id: Id6b5921bd1e3e7b196c4b3223920e51ae5e0b840
Closes-Bug: #1538210

After introduction of pull action and turing every main.yml into
{{action}}.yml we lost ability to perform upgrade

Change-Id: Ie9fa2cd083b061033abc733fba53d54f9c55e393
Fixes-Bug: #1538210