Support Ubuntu Bionic LTS release for manila
Support Ubuntu Bionic LTS release for manila

Continue to use the upstream shaman repos for manila so
we can test changes prior to their inclusion in the distro.

Also overwrite /etc/ganesha/ganesha.conf rather than
appending to it since the file now ships with configuration
that breaks ganesha with CephFS FSAL.

Change-Id: I6db16684fcf1e4ad573e25f0475b283cd85dc2c7

openstack/devstack-plugin-ceph