Fixes a bug where the Baremetal Introspection service's public endpoint
registered in the Identity service referenced the internal API endpoint.
Also updates keystone endpoints for the Baremetal and Baremetal
Introspection services during reconfigure and upgrade operations.
Previously this was only done during deploy.
Change-Id: I32d475f288bb4a3834c13cc86f0c53b5437c3d25
Closes-Bug: #1738418