Updated openstack/openstack
Project: openstack-infra/devstack-gate  7eb88e1ff5d63e1fc856d5dd6db0b5abc7f1c1c1

yum non interactive

yum without -y option might ask for interactive response.
"Is this ok [y/d/N]: "

Adding -y to the yum command.

Change-Id: I74c9615c7d0288cf9815ee96b1484bf31dcbb6c1