reports: edited ic query-only_vms_active_vms

I edited the, only_vms_active_vms,
input control query,
so it will be more readable and added comments.

Change-Id: I4d6fe579f91f29d8c9823d8647939e496ea92358
Signed-off-by: Shirly Radco <sradco@redhat.com>