Updated openstack/openstack
Project: openstack-dev/devstack  7adfe91ca6d83cf91fcfc0642b62f5e69e9afa52

libvirt plugin "parallels" support

We're in the process of establishing the CI testing with
Parallels Cloud Server plugin for libvirt.
Currently we use local clone of devstack in our infrastructure,
but we want to switch to upstream

requires extra customization of nova.conf and glance-api.conf:
nova.conf should have "images_type" and "connection_uri"
defined, and glance-api.conf to have "ploop" in disk formats

Implements: blueprint pcs-support
Change-Id: I0b073359fda8b4531cae7b8946eb52a561c82857