Code review comment for lp:~gesha/linaro-license-protection/fix-prebuilt-publishing

> Looks good. I would like you to please add some more tests with --staging for
> android/kernel-hwpack/prebuilt/images/hwpacks. I see there is only one test
> for 'binaries' type only.

Actually we don't need tests for each type of job with --staging. We have params validation, single artifact moving test with and w/o --staging.
I've added tests for moving artifacts with subdirs in the path.