Use RDO repositories for OKD and move to CS9

The tripleo repository is not maintained anymore and the content
has been archived.
Start using the RDO repositories and switch to CentOS Stream 9.

Dockerfile.okd

@@ -1,4 +1,4 @@
-FROM quay.io/centos/centos:stream8
+FROM quay.io/centos/centos:stream9
 
 ENV PKGS_LIST=packages-list.okd
 ARG EXTRA_PKGS_LIST
@@ -7,9 +7,12 @@ ARG PATCH_LIST
 COPY ${PKGS_LIST}* ${EXTRA_PKGS_LIST:-$PKGS_LIST} ${PATCH_LIST:-$PKGS_LIST} /tmp/
 COPY prepare-image.sh patch-image.sh /bin/
 
-# Configure OpenStack repos
-RUN dnf install --setopt=install_weak_deps=False --setopt=tsflags=nodocs -y python3 python3-requests && \
-    curl https://raw.githubusercontent.com/openstack/tripleo-repos/master/plugins/module_utils/tripleo_repos/main.py | python3 - -b master current-tripleo
+# Configure OpenStack repos from RDO https://www.rdoproject.org
+RUN dnf upgrade -y && \
+  dnf install -y dnf-plugins-core && \
+  dnf config-manager --enable crb && \
+  curl https://trunk.rdoproject.org/centos9-master/puppet-passed-ci/delorean.repo -o /etc/yum.repos.d/rdo.repo && \
+  curl https://trunk.rdoproject.org/centos9-master/delorean-deps.repo -o /etc/yum.repos.d/rdo-deps.repo
 
 RUN prepare-image.sh && \
   mkdir -p /etc/ironic-python-agent && \