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

Partial-Bug-R2.0: 1374282

Change-Id: I45e3a57987d7452f51ce96621ce122ef0c5e18db
Merge "No need to maintain contrail-keystone-setup.sh in contrail-packaging repo, as it is maintained in contrail-provisioning repo." into R2.0