Revert "[CI] [to-revert] Avoid upgrades on CentOS Stream 8"

This reverts commit 4bdd920.

Reason for revert: Ping bug fixed

Change-Id: I6e49730fab79eb786565d7a427314b6bc5ddbfe2

Author: markgoddard

zuul.d/project.yaml

@@ -32,6 +32,7 @@
         - kolla-ansible-centos8s-source-ironic
         - kolla-ansible-centos8s-binary-ironic
         - kolla-ansible-ubuntu-source-ironic
+        - kolla-ansible-centos8s-source-upgrade
         - kolla-ansible-debian-source-upgrade
         - kolla-ansible-ubuntu-source-upgrade
         - kolla-ansible-centos8s-binary
@@ -48,6 +49,7 @@
         - kolla-ansible-centos8s-source-monasca
         - kolla-ansible-centos8s-source-cephadm
         - kolla-ansible-ubuntu-source-cephadm
+        - kolla-ansible-centos8s-source-upgrade-cephadm
         - kolla-ansible-ubuntu-source-upgrade-cephadm
     check-arm64:
       jobs:
@@ -57,5 +59,6 @@
       queue: kolla
       jobs:
         - kolla-ansible-centos8s-source
+        - kolla-ansible-centos8s-source-upgrade
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-source-upgrade