Skip hosts are run by users who can't be found

This fixes 2 problems:
* where the user doesn't exist.
* and when there is a system user running a vm, in that case, they won't
  have an email address.

Change-Id: Ib104a9d4aaaa7efd6171d0eb12d1b2ab22f7b3ab
Added logging to script

Change-Id: I079b0d206befea3caa5becdafcc55d7b30ef62cd