Teach min and max to MoM policy parser

Change-Id: I6fef9f562dd04ed8d9aab3fbac62d18e2d9885b9
Signed-off-by: Martin Sivak <msivak@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/15800
Reviewed-by: Adam Litke <agl@us.ibm.com>