Updated openstack/openstack
Project: openstack-dev/devstack  0054d9242e54ca72aca2a72def9baea03e12166e
null
Use service postgresql initdb with el6

postgresql-setup does not exists on el6,
the service postgresql initdb is the documented db init command.

Change-Id: I2b92a3c8e7db603eb13378e46893fc81f507405b