Add rockstar account to puppet

Change-Id: Ie756349e00b318b5d4d73161374960df121240f1
Reviewed-on: https://review.openstack.org/30163
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Stefano Maffulli <stefano@openstack.org>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins