Adds GH action to sync branches

[frenzyfriday]

This PR is to test the following, but on a dummy branch

• One reusable workflow to actually sync the branches
• One cron action to call ^ periodically
• Runs on Monday 21:00 so that I can test if it works

[lewisdenny]

/hold

You can remove the hold when ready to test @frenzyfriday

[frenzyfriday]

recheck

[jguiditta]

Sorry, I thought I only had the one comment, but keep finding more things to mention as I read though the checkout action docs. I have batched up what I think should be the rest of my thoughts here.
One general suggestion I have is to create your follower branch on your fork to fully test this patch. Then you should be able to see it run in your own fork of the action. I have done this successfully in the past on other projects.

[frenzyfriday]

Moving to DNM once more. I tested on a dummy repo: https://github.com/frenzyfriday/frenzyfriday-testproject/blob/stable/.github/workflows/sync_branches_reusable_workflow.yml this worked finally. I found an obvious flaw in my patch - it assumes a /sync-olive comment will trigger it. Where will one comment this? On a random PR? No. So I need to find a better trigger for my workflow.
Also if Require a pull request before merging is enabled the workflow will fail. So I need to create a token with limited permission and allow that token as exception to the PR rule.

So, DNM till I do all that.
We can go with these meanwhile:

• One time manual rebase to sync stable with master #2808
• One time manual rebase to sync stable with master #2805

[frenzyfriday]

Moving to DNM once more. I tested on a dummy repo: https://github.com/frenzyfriday/frenzyfriday-testproject/blob/stable/.github/workflows/sync_branches_reusable_workflow.yml this worked finally. I found an obvious flaw in my patch - it assumes a /sync-olive comment will trigger it. Where will one comment this? On a random PR? No. So I need to find a better trigger for my workflow. Also if Require a pull request before merging is enabled the workflow will fail. So I need to create a token with limited permission and allow that token as exception to the PR rule.

So, DNM till I do all that. We can go with these meanwhile:

• One time manual rebase to sync stable with master #2808
• One time manual rebase to sync stable with master #2805

Updated some bits. At least the cron sync for olive should work now (while I focus on service users etc)

[danpawlik]

Team email would just look better ;)

[frenzyfriday]

Team email would just look better ;)

This is the email id of the github actions bot. I am not sure if I can change it to something specific

[openshift-ci]

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