[stable/2024.1] Stop using CDN for CI (#2185) (#2194)

Switch image builds to use Harbor
Switch Zuul to avoid CDN
Small more fixes
Configure CI bits to not use CDN
Fixes #2187
diff --git a/images/heat/Dockerfile b/images/heat/Dockerfile
index 8b2761b..3d75505 100644
--- a/images/heat/Dockerfile
+++ b/images/heat/Dockerfile
@@ -3,7 +3,7 @@
 
 ARG RELEASE
 
-FROM registry.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
+FROM harbor.atmosphere.dev/library/openstack-venv-builder:${RELEASE} AS build
 ARG HEAT_GIT_REF=512052a0553cc3661aa850542a13466b07a0c5c6
 ADD --keep-git-dir=true https://opendev.org/openstack/heat.git#${HEAT_GIT_REF} /src/heat
 RUN git -C /src/heat fetch --unshallow
@@ -13,7 +13,7 @@
         /src/heat
 EOF
 
-FROM registry.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
+FROM harbor.atmosphere.dev/library/openstack-python-runtime:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \