There is no need to decorate all tests with ValidateRunningAsRoot

This is since setupModule already requires root previliges when
Adding dummy links. So even tests that are not decorated with
ValidateRunningAsRoot actually require root previliges.

Change-Id: I3f85ea9ed7a8dd19f012d65b884998e525aa2259
Signed-off-by: ibarkan <ibarkan@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/36049
Reviewed-by: Dan Kenigsberg <danken@redhat.com>