centos: use Centos openstack repos, not RDO

Switch to installing the centos rebuilds of RDO packages, rather than
RDO.

Change-Id: I0c73034a85db5664e979b9b71cc340860265bf34

install_puppet.sh

@@ -142,9 +142,13 @@ function setup_puppet_rhel7 {
     # Wipe out templatedir so we don't get warnings about it
     sed -i '/templatedir/d' /etc/puppet/puppet.conf
 
-    # install RDO repo as well; this covers a few things like
-    # openvswitch that aren't available
-    yum install -y https://rdoproject.org/repos/rdo-release.rpm
+    # install CentOS OpenStack repos as well (rebuilds of RDO
+    # packages).  We don't use openstack project rpm files, but covers
+    # a few things like qemu-kvm-ev (the forward port of qemu with
+    # later features) that aren't available in base.  We need this
+    # early for things like openvswitch (XXX: should be installed via
+    # dib before this?)
+    yum install -y centos-release-openstack-ocata
 }
 
 function setup_puppet_ubuntu {