BZ 858030 - Allow 0 storage in HWPs
BZ 858030 - Allow 0 storage in HWPs

A hardware profile with no storage is a valid configuration,
so Conductor should accept it.

Resolves https://bugzilla.redhat.com/show_bug.cgi?id=858030

aeolusproject/conductor,aeolusproject/conductor,aeolusproject/conductor,aeolusproject/conductor