instack-undercloud is no longer in use by the TripleO project. Removing
the code to avoid confusion. Stable branches will continue to be
maintained for their life however no new features should be added.
Change-Id: I63a813c7c1ffd30ca30017133d31a497b77a9a4d
Blueprint: remove-instack-undercloud
Switch Keystone endpoints to be versionless so Keystone v3 can be used
by default on the undercloud.
Change-Id: I1722972b7231d6d1fe02e1214af71d5296f7da9d
Related-Bug: #1667679