Pipeline can be triggered via MR comments
Problem to solve
As a maintainer I want to provisionally approve this merge request but it should run a full regression next time so that we can be sure all tests pass and confident in the change.
Also, the same feature is available in GitHub Action https://github.com/marketplace/actions/pull-request-comment-trigger
Proposal
Consider add a predefined variable like CI_MERGE_REQUEST_COMMENTS
with regex expression rule capcability like $CI_COMMIT_MESSAGE =~ /some-regexp/
. This is similar to our existing variable CI_COMMIT_MESSAGE
Edited by James Heimbuck