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
It was deprecated in ironic-inspector and is being deprecated in puppet-ironic.
Change-Id: Ia5658a0a2b77dff6698c7a5b784e95558b8d2d52
Related-Bug: #1654318