Sahara supports unversioned endpoint also for the current API v1.1,
and deploying with unversioned endpoints is a better setting
if people want to use both API v1.1 and the (soon-stable) API v2
at the same time.
See https://review.openstack.org/#/c/582285/ for more details.
Closes-Bug: #1782147
Change-Id: I113af3a351df1cb1d1e3cc5e7bb2e5efd8e58ec7