Don't install centos repos on RHEL

For running job on RHEL use openvswitch from RHEL8 deps repo,
because centos queens openvswitch causes conflicts with RHEL8
version.

Change-Id: Ia09227cb28ec4a4f9bdbb664b9c7caf714043e31

roles/multi-node-bridge/templates/zuul-multi-node-bridge-ovs.repo.j2

@@ -1,4 +1,5 @@
 # Vendored from rdo-release: https://github.com/rdo-infra/rdo-release
+{% if ansible_distribution == 'CentOS' %}
 [centos-openstack-queens]
 name=CentOS OpenStack Queens Repository
 {% if zuul_site_mirror_fqdn is defined %}
@@ -9,3 +10,10 @@ baseurl=http://mirror.centos.org/centos/7/cloud/$basearch/openstack-queens/
 gpgcheck=1
 enabled=1
 gpgkey=file:///tmp/RPM-GPG-KEY-CentOS-SIG-Cloud
+{% elif ansible_distribution == 'RedHat' %}
+[RDO-RHEL8-deps]
+name=RedHat Openstack deps repo
+baseurl=https://trunk.rdoproject.org/rhel8-master/deps/latest/
+gpgcheck=0
+enabled=1
+{% endif %}

roles/multi-node-bridge/vars/CentOS.yaml

@@ -0,0 +1,3 @@
+---
+ovs_package: "openvswitch"
+ovs_service: "openvswitch"

roles/multi-node-bridge/vars/Fedora.yaml

@@ -0,0 +1,3 @@
+---
+ovs_package: "openvswitch"
+ovs_service: "openvswitch"

roles/multi-node-bridge/vars/RedHat.yaml

@@ -1,3 +1,3 @@
 ---
-ovs_package: "openvswitch"
+ovs_package: "rhosp-openvswitch"
 ovs_service: "openvswitch"