Mirror selenium/standalone-firefox to Quay.io

We rely on this image in many of our system-config-run-* jobs to
interact with services through firefox and take screenshots of them
within the browser. Continue to reduce our reliance on docker hub by
mirroring this image to quay.io.

A followup will update the run-selenium role in this repo to run the
image from quay.io instead.

Change-Id: I4c923291e7f4b5d275a6ff48210b935edf837e70

zuul.d/docker-mirror.yaml

@@ -265,6 +265,22 @@
           dest_tag: '2'
           dest_registry: quay.io
 
+- job:
+    name: opendev-mirror-container-image-selenium
+    parent: system-config-mirror-container-images
+    vars:
+      container_images:
+        - registry: quay.io
+          namespace: opendevmirror
+          repo_shortname: selenium-standalone-firefox
+          repo_description: Selenium standalone Firefox image mirror
+      mirror_container_images_images:
+        - src_repository: docker.io/selenium/standalone-firefox
+          src_tag: latest
+          dest_repository: quay.io/opendevmirror/selenium-standalone-firefox
+          dest_tag: latest
+          dest_registry: quay.io
+
 - job:
     name: opendev-mirror-container-image-ubuntu
     parent: system-config-mirror-container-images

zuul.d/project.yaml

@@ -629,6 +629,7 @@
         - opendev-mirror-container-image-python-builder
         - opendev-mirror-container-image-uwsgi-base
         - opendev-mirror-container-image-registry
+        - opendev-mirror-container-image-selenium
         - opendev-mirror-container-image-ubuntu
         - opendev-mirror-container-image-zookeeper
         # Nightly runs of ansible things for catchup