Switch to ubi9 containers_base_image image

Since RHEL-9 is released now and
registry.access.redhat.com/ubi9 is also available.
Let's use the same in content provider and build-containers job.

Depends-On: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/846166


Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com>
Change-Id: Ieb275fd0f4f9df2251465a8fffe2a962d53b1ce9

roles/build-containers/vars/centos-9.yml

@@ -22,3 +22,5 @@ volume_mounts:
   - "/etc/yum.repos.d:/etc/distro.repos.d:z"
   - "/etc/pki/rpm-gpg:/etc/pki/rpm-gpg:z"
   - "/etc/dnf/vars:/etc/dnf/vars:z"
+
+containers_base_image: registry.access.redhat.com/ubi9:latest

zuul.d/build-containers.yaml

@@ -78,7 +78,6 @@
     parent: tripleo-ci-build-containers-required-projects-upstream
     nodeset: single-centos-9-node
     vars:
-      containers_base_image: quay.io/centos/centos:stream9
       registry_namespace: tripleomastercentos9
       push_containers: false
       push_containers_podman: false

zuul.d/content-provider.yaml

@@ -30,7 +30,7 @@
     branches: ^(?!stable/(train|victoria)).*$
     nodeset: single-centos-9-node
     vars:
-      containers_base_image: quay.io/centos/centos:stream9
+      containers_base_image: registry.access.redhat.com/ubi9:latest
 
 - job:
     name: tripleo-ci-centos-9-content-provider-wallaby

zuul.d/standalone-jobs.yaml

@@ -67,7 +67,7 @@
     parent: tripleo-ci-base-standalone-centos-9
     branches: &c9_branches ^(?!stable/(train|victoria)).*$
     vars:
-      containers_base_image: quay.io/centos/centos:stream9
+      containers_base_image: registry.access.redhat.com/ubi9:latest
       featureset: '052'
     irrelevant-files: *irrelevant_files