The change of behaviour will only have affect on newly installed
deployments on OpenStack Train and onwards.
Also set upper constraint for ``python-cinderclient`` in the
functional test requirements as it relies on the v1 client
which has been removed. We will not fix this in Amulet, charm
pending migration to the Zaza framework.
Change-Id: Ia73ed6b76fc7f18014d4fa913397cc069e51ff07
Depends-On: Iee73164358745628a4b8658614608bc872771fd1
Closes-Bug: #1839300