Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Add the standard LICENSE file
  Documentation: Fix the in-tree bazel test command
  Start dockerized postgres server in junit test using testcontainers
  PostgresQueueTest#testList: Tolerate up to 1s skew in queued time stamp

Change-Id: I8a250ca976f0f3813d7c530cdec76ce684df2a86