[stable/2023.1] Stop using CDN for CI (#2185) (#2196)

Switch image builds to use Harbor
Switch Zuul to avoid CDN
Small more fixes
Configure CI bits to not use CDN
fixes #2189
diff --git a/zuul.d/container-images/ovn.yaml b/zuul.d/container-images/ovn.yaml
index e7735cb..83d4aca 100644
--- a/zuul.d/container-images/ovn.yaml
+++ b/zuul.d/container-images/ovn.yaml
@@ -35,8 +35,8 @@
       promote_container_image_job: atmosphere-upload-container-image-ovn
       container_images:
         - context: images/ovn
-          registry: registry.atmosphere.dev
-          repository: registry.atmosphere.dev/library/ovn-central
+          registry: harbor.atmosphere.dev
+          repository: harbor.atmosphere.dev/library/ovn-central
           arch:
             - linux/amd64
           build_args:
@@ -45,8 +45,8 @@
           tags:
             - "{{ zuul.branch | replace('stable/', '') }}"
         - context: images/ovn
-          registry: registry.atmosphere.dev
-          repository: registry.atmosphere.dev/library/ovn-host
+          registry: harbor.atmosphere.dev
+          repository: harbor.atmosphere.dev/library/ovn-host
           arch:
             - linux/amd64
             - linux/arm64