Release constraint for OVS/OVN versions for EL

RDO has stopped building packages for older versions of OVS/OVN
which means that upstream fixes are not ending up in deployments.

We remove previously defined excludes as bugs related to
new versions were sorted out. At the same time we struggle from
old OVS bugs in CI.

Change-Id: I5be67c3a08645050187bee61e6a46f6b6f738604
Related-Bug: #2027854

releasenotes/notes/el_ovs_3.1_stable-951c1b8a148bbcaf.yaml

@@ -0,0 +1,23 @@
+---
+upgrade:
+  - |
+    CentOS/Rocky linux deployments will get major update of OVS version
+    from 2.17 to 3.1 and OVN from 22.12 to 23.03.
+    RDO has stopped building packages for previous OVS/OVN versions which
+    means they will not recieve any upstream bugfixes or security patches.
+
+    If you still want to preserve old versions of OVS/OVN, you can define
+    a following variable:
+
+    .. code-block:: yaml
+
+      openstack_hosts_package_repos:
+        - name: rdo-deps
+          file: rdo-deps
+          description: rdo-deps
+          baseurl: "{{ openstack_hosts_rdo_deps_url }}"
+          gpgcheck: no
+          module_hotfixes: yes
+          exclude:
+            - '*rdo-openvswitch*3.1*'
+            - '*rdo-ovn*3.1*'

vars/redhat-9.yml

@@ -98,8 +98,5 @@ _package_repos:
     baseurl: "{{ openstack_hosts_rdo_deps_url }}"
     gpgcheck: no
     module_hotfixes: yes
-    exclude:
-      - '*rdo-openvswitch*3.1*'
-      - '*rdo-ovn*3.1*'
 
 _openstack_ca_bundle_path: /etc/pki/tls/certs/ca-bundle.crt