As part of the k8s deployment workflow, implement the following:
==== `scap backport change_url [change_url]`
[ ] Validate that the specified changes are suitable (e.g., acceptable repository, acceptable branch)
[ ] +2 on changes
[x] (automatically triggered) trigger pipeline job on releases-jenkins to build new wmf branch image w/ given changes and new multiversion image
~~[ ] listen for promote patchset on deployment-charts~~
** tag images with something identifying patch for use by final image build and deployment-charts(?)
~~[ ] +2 deployment-charts ps (bump image tag in helmfile.d/service/values.yaml), wait for merge~~
[ ] completed build triggers image tag update in private helmfile-defaults/mediawiki/releases.yaml file
[ ] (LEGACY) unpack image (based on the image tag in helmfile.d/service/values.yaml) into /srv/mediawiki
[ ] runs `helmfile apply`
[ ] (LEGACY) syncs to legacy servers using scap sync-world (or optimized equivalent)