This patch add a way to choose container engine inside tool and test
scripts. This is in preparation for Podman introduction but still
leaves Docker as default container engine.

Signed-off-by: Martin Hiner <m.hiner@partner.samsung.com>
Change-Id: I395d2bdb0dfb4b325b6ad197c8893c8a0f768324

Adds HAcluster Ansible role. This role contains High Availability
clustering solution composed of Corosync, Pacemaker and Pacemaker Remote.

HAcluster is added as a helper role for Masakari which requires it for
its host monitoring, allowing to provide HA to instances on a failed
compute host.

Kolla hacluster images merged in [1].

[1] https://review.opendev.org/#/c/668765/



Change-Id: I91e5c1840ace8f567daf462c4eb3ec1f0c503823
Implements: blueprint ansible-pacemaker-support
Co-Authored-By: Radosław Piliszek <radoslaw.piliszek@gmail.com>
Co-Authored-By: Mark Goddard <mark@stackhpc.com>

Now that the issue is fixed upstream, let's remove the workaround.

[1] If3943060b5d09bd153b6401d34c7d10d3dc864fe

Change-Id: I9cbeee5a397d736338ff2065001d9d6be20cb66e

Add Masakari testing into the Gate.

Change-Id: I52df33f963e7d2ae4059887df3d24d9e6642134e
Depends-On: https://review.opendev.org/#/c/615469/
Depends-On: https://review.opendev.org/#/c/615715


Implements: blueprint ansible-masakari
Co-Authored-By: Gaëtan Trellu <gaetan.trellu@incloudus.com>