Pull python base image for statsd metric reporters from quay.io

The parent change moves the publication of these images to quay.io.
Build the haproxy and zookeeper statsd sidecar images with the images
hosted on quay.io to match.

We switch to building with docker now that docker is capable of
building with speculative images in single arch builds.

Change-Id: I8f444c01cd46099df93250994286aab0633b856d

docker/haproxy-statsd/Dockerfile

@@ -15,7 +15,7 @@
 
 # Thu Aug  7 07:33:54 PM UTC 2025 - trigger rebuild
 
-FROM docker.io/opendevorg/python-base:3.12-bookworm
+FROM quay.io/opendevorg/python-base:3.12-bookworm
 
 COPY haproxy-statsd.py /usr/local/bin
 RUN pip install statsd

docker/zookeeper-statsd/Dockerfile

@@ -16,7 +16,7 @@
 
 # Thu Aug  7 07:33:54 PM UTC 2025 - trigger rebuild
 
-FROM docker.io/opendevorg/python-base:3.12-bookworm
+FROM quay.io/opendevorg/python-base:3.12-bookworm
 
 COPY zookeeper-statsd.py /usr/local/bin
 RUN pip install statsd

zuul.d/docker-images/haproxy.yaml

@@ -7,6 +7,7 @@
     provides: haproxy-statsd-container-image
     vars: &haproxy-statsd_vars
       promote_container_image_job: system-config-upload-image-haproxy-statsd
+      container_command: docker
       container_images:
         - context: docker/haproxy-statsd
           registry: quay.io

zuul.d/docker-images/zookeeper-statsd.yaml

@@ -6,6 +6,7 @@
     requires: python-base-3.12-bookworm-container-image
     vars: &zookeeper-statsd_vars
       promote_container_image_job: system-config-upload-image-zookeeper-statsd
+      container_command: docker
       container_images:
         - context: docker/zookeeper-statsd
           registry: quay.io