Add libvirt API acl test case for virsh dompmsuspend

Update virsh dompmsuspend test case for test API 'pm-control' in
virDomainPtr set.

Signed-off-by: Wayne Sun <gsun@redhat.com>
Merge pull request #328 from waynesun09/acl_misc

dompmsuspend: Add acl test case for pm-control