Description of problem: Please see https://review.gluster.org/#/c/glusterfs/+/22544/ & https://build.gluster.org/job/centos7-regression/5518/ which should have voted back and that didn't happen.
I thought I solved this issue. But looking more into the problem it seems the issue is not with Gerrit trigger plugin of Jenkins but with the builder. As I see all the patches which had due vote built on the same 203builder. Looking at what recent changes introduced this.
Mhh, I see: 17:51:40 Host key verification failed. Could be something related to reinstallation of the builder last time.
Ok so I suspect the problem is the following. We reinstalled the builder, so the home was erased. The script do run ssh review, but it was blocked on the key verification step, because no one was here to type "yes", since this was the first attempt. I did it (su - jenkins, ssh review.gluster.org), and I suspect this should be better. If the symptom no longer appear, then my hypothesis was good. I think the fix would be to change the ssh command to accept the key on first use, i will provide a patch.
https://review.gluster.org/#/c/build-jobs/+/22548 for my proposed fix
It is fixed now.