Merge branch 'stable-3.9' into stable-3.10

* stable-3.9:
  Fix incorrect documentation about excludeRefs
  Document replicateHiddenProjects setting
  Log stacktrace when replication fails

Change-Id: I2eb283eb0ec6f3188947617c43269b60ae872be7
tree: e1ad8bba0286ac1f85859d90d6c5357575977282
  1. example-setup/
  2. src/
  3. .gitignore
  4. BUILD
  5. Jenkinsfile
  6. LICENSE