
With commit d126b3f92e56 we added the pgk "software-properties-common" to allow the installation of the new repositories. This is a follow up patch which implements the cleanup of this package in case the devstack-plugin is used outside of a OpenStack testing job (for example a test VM of developer who doesn't throw away the VM immediately). Change-Id: I474341bbba567c8edb42b2b1bf760d09dfb9ddc5