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

This reverts commit 9449bcfb.

Reason for revert: Ping bug fixed

Change-Id: If52d6757c8c57a6a32b2cf2a481b748e25fc5607

zuul.d/project.yaml

@@ -33,6 +33,7 @@
         - 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
@@ -49,6 +50,7 @@
         - 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
         - kolla-ansible-centos8s-hashi-vault
     check-arm64:
@@ -59,10 +61,12 @@
       queue: kolla
       jobs:
         - kolla-ansible-centos8s-source
+        - kolla-ansible-centos8s-source-upgrade
         - kolla-ansible-debian-source
         - kolla-ansible-debian-source-upgrade
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-source-upgrade
     experimental:
       jobs:
+        - kolla-ansible-centos8s-source-swift-upgrade
         - kolla-ansible-ubuntu-source-swift-upgrade