Improve upstream notification to post to MR instead of commit
- We'll now post the upstream comment on MRs only.
- All notifications will go into the same comment.
Example of a first-time comment:
Example of a second notification:
Example of a third notification:
This has been tested in gitlab!85724 (comment 927391125).
Related to gitlab#350478 (comment 921161776).
Edited by Rémy Coutable