[stable/2023.2] Stop using CDN for CI (#2185) (#2195)

Switch image builds to use Harbor
Switch Zuul to avoid CDN
Small more fixes
Configure CI bits to not use CDN
fixes #2188
diff --git a/images/netoffload/Dockerfile b/images/netoffload/Dockerfile
index d11119a..2294305 100644
--- a/images/netoffload/Dockerfile
+++ b/images/netoffload/Dockerfile
@@ -3,13 +3,13 @@
 
 ARG RELEASE
 
-FROM golang:1.20 AS build
+FROM harbor.atmosphere.dev/docker.io/library/golang:1.20 AS build
 ARG NETOFFLOAD_GIT_REF=94b8c0fdb0b83bd1b7e14b9a58077a047c78a800
 ADD https://github.com/vexxhost/netoffload.git#${NETOFFLOAD_GIT_REF} /src
 WORKDIR /src
 RUN go build -v -o offloadctl ./cmd/offloadctl/main.go
 
-FROM registry.atmosphere.dev/library/ubuntu:${RELEASE}
+FROM harbor.atmosphere.dev/library/ubuntu:${RELEASE}
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \