Set default branch for git review/gerrit.

Switch amulet tests to stable.

Switch to using stable charm-helpers branch.

Change-Id: I717a23bc9321a0ef843588a459eeed5719d1854e

Make default func27-smoke xenial-pike
Charm-helpers sync

Change-Id: I289d38e4170d204fbf9b0281b28be28c9e847e65

Install OpenStack using snaps. By setting openstack-origin to
snap:track/channel or snap:track the charm will use snaps to
install rather than debs. If channel is left off it defaults to
stable. For example: snap:ocata/edge will install the edge version of
Ocata and snap:pike will install the stable version of Pike.

Charm helpers sync for snap related helpers.

Change-Id: I6e3540e4ffe081540404f91061e5c9b7039b3eac

Set default branch for git review/gerrit.

Switch amulet tests to stable.

Switch to using stable charm-helpers branch.

Change-Id: I91b95577f1f3963541f6196381e2ce881847a19f

Unconfigured keystone service listening on ports destined for haproxy
race with start of haproxy service.

Change-Id: I9f601344e72bd67738429f82151f9683f5ecf8e4
Closes-Bug: #1648396

Enable dual stack IPv4 and IPv6 VIPs on the same interface.
HAProxy always listens on both IPv4 and IPv6 allowing connectivity
on either protocol.

Update edge cases for is_ssl_cert_master for Bug #1709356.

Update amulet tests for keystoneauth1 tests.

charm-helpers sync for HAProxy template changes.

Closes-Bug: #1709356

Change-Id: I401071fcdd66252f389475d45e8136fc68c474f1