• Update to 0.26.0
• Enabled concurrent installation
• Sorted variables a bit according to the PHB
• Added OPTIONS for Cinder and VMware storage backends and make both options as default (otherwise the ${PREFIX}/bin/glance-rootwrap script is unusable)

Notes:
In future there might be added more OPTIONS for another storage backend

Changes by upstream:

• http://git.openstack.org/cgit/openstack/glance_store/log/?h=stable/queens

PR: 230135
Submitted by: ndowens@yahoo.com, freebsd_ports@k-worx.org
Approved by: maintainer