restapi: rest support for MacPool

Change-Id: Id343433198dadd209933b69012303c51acb4c1e1
Bug-Url: https://bugzilla.redhat.com/1078844
Signed-off-by: Moti Asayag <masayag@redhat.com>
Signed-off-by: Martin Mucha <mmucha@redhat.com>