Merge branch 'stable-3.3'
* stable-3.3:
Remove standalone build mode
Remove unnecessary public qualifier from GetConfig.ConfigInfo
Fix errorprone errors
Define Provider<ProjectLevelConfig.Bare>, reduce code repetition
Stop using deprecated JGit API getAllRefs
Make compatible with Gerrit stable-3.3 branch
Upgrade bazlets to latest stable-3.2 to build with 3.2.5.1 API
Upgrade bazlets to latest stable-3.1 to build with 3.1.10 API
Bump Bazel version to 3.7.0
Upgrade bazlets to latest stable-3.0 to build with 3.0.13 API
Bump Bazel version to 3.5.0
Change-Id: Icc5a7f9f0e8b0a7d3af60c640e184f98947a3b86