Don't stop openvswitch when deploying OpenShift

Instead of disabling openvswitch managed by TripleO when deploying
OpenShift, we should tell OpenShift to let TripleO manage it. We're
going down this path on the openshift-ansible path so we'll stop
disabling openvswitch in t-h-t.

Change-Id: I51226fc363f1c15deb6e33cc7ce15ffe3ac7e9c7

extraconfig/services/openshift-master.yaml

@@ -121,6 +121,7 @@ outputs:
                   containerized: true
                   openshift_master_cluster_method: native
                   openshift_use_dnsmasq: true
+                  openshift_use_external_openvswitch: true
 
             - name: set openshift global vars fact
               set_fact:
@@ -147,12 +148,6 @@ outputs:
                     hosts: all
 
                     tasks:
-                      - name: Stop and disable OVS on bare metal
-                        service:
-                          name: openvswitch
-                          state: stopped
-                          enabled: no
-
                       - name: install NetworkManager
                         package:
                           name: NetworkManager