OpenStack Patching: install repos/puppets

The fuel-upgrade script have to install new repos and puppet scripts
that will be used for openstack patching.

Implements blueprint upgrade-to-5-1
Closes-Bug: #1327198

Change-Id: I8f3f0ba2dc30670c4cade52411690357d0afb675
Merge "OpenStack Patching: install repos/puppets"