Include PR author user_login in metadata

[drnic]

Towards the possible implementation of whitelist protection in subsequent task steps before doing insecure builds/deployments

Verification from using this branch upon egen/concourse-pullrequest-playtime#1 in https://ci.starkandwayne.com/teams/main/pipelines/concourse-pullrequest-playtime/jobs/test-pr/builds/9. Within the test-pr container, the .../git-pull-requests folder has pullrequest.userlogin config:

# git config --list
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true
remote.origin.url=https://github.com/starkandwayne/concourse-pullrequest-playtime
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
branch.master.remote=origin
branch.master.merge=refs/heads/master
pullrequest.url=https://github.com/starkandwayne/concourse-pullrequest-playtime/pull/1
pullrequest.id=1
pullrequest.branch=drnic-patch-1
pullrequest.basebranch=master
pullrequest.userlogin=starkandwayne

# cat .git/userlogin
starkandwayne

[drnic]

@jtarchie I cannot see CI to see what the CI failure is. Can you make your PR job public please so I can fix my PR?

[jtarchie]

You should be able to run the tests locally.

[drnic]

@jtarchie thanks, test failures fixed.

[jtarchie]

Released in v28. Thanks for the PR!