No need to maintain contrail-keystone-setup.sh in contrail-packaging repo, as it is
maintained in contrail-provisioning repo.

Change-Id: I3c0caa2092700cd3e6c4643af9861ead2d2c72b7
Partial-Bug-Master: 1374282
Merge "No need to maintain contrail-keystone-setup.sh in contrail-packaging repo, as it is maintained in contrail-provisioning repo."