Allow reftable job to fail
reftable job started failing due to an upstream change in Git that changed the output of some commands. The change was recently merged into Git's master branch which the 'reftable' job is using. The offending commit is ac16f55697211ae4ef557706a098b8ed34a7fda6. The change is triggering pipeline failures in Gitaly and blocking merges of MRs. For now, allow failures of the reftable job until the issue is fixed.
Edited by Sami Hiltunen