[Review] Request from 'aduffeck' @ 'SUSE/machinery/review_141218_handle_btrfs_subvolumes'

Please review the following changes:
  * b5df0a4 Do not ignore Btrfs subvolumes during unmanaged-files inspection
  * 3dd52d6 Merge pull request #465 from SUSE/fix_460_2
  * e3fb1f6 Optimize Autoyast repository export
  * cf4a8b1 Add chroot_scripts as attribute to Autoyast export
  * a6cfe9d Add disabled repository example to factory
  * d8e5e16 Merge pull request #464 from SUSE/review_141218_fix_integration_tests
  * a31186d Fix integration tests broken in f44b59a