Merge branch 'stable-2.16'

* stable-2.16:
  Use core to generate password and drop dependency on commons-codec
  Revert "Remove explicit dependency on commons-codec"
  Make transitive starlark loads explicit
  Make transitive starlark loads explicit
  Remove explicit dependency on commons-codec
  Make transitive starlark loads explicit

Change-Id: Iccffc3d8a8111587c81f32d9f579e770ee011eaf