* stable-2.16:
Error Prone: Enable and fix OperatorPrecedence
GerritBaseTests: Activate test logging
Revert "Enable optional DEBUG level logs for query tests"
Allow to control the Gerrit log level for running tests from system var
Revert "Acceptance: set log threshold level for tests"
Reduce log level for tests to INFO
Bazel: Update time attribute of file entries in plugin artifact
Add Jetty connection metrics
Add additional JGit WindowCache metrics
Update JGit to 5.1.13.202002110435-r
BucketedCallback: fix prune() to remove unset sub-metrics from registry
Modify draft ref updates commits to point to an empty parent
CommentsIT: Adapt to the 3.0 version of Gerrit.
Change-Id: I532d092329bdd94a85cccdf2b34dd150944a6699