Updated openstack/openstack
Project: openstack/heat  99d1483b1968880cfe78b878fda0c4e01eb3e400
null
Set statuscode=404 in NotFoundException in tests

when resource can'n be found,neutron will set
statuscode=404 in NotFoundException,so add statuscode
in exception to make fake client have same action.

Change-Id: I6597f080903501d9fe6050893054cc7dba6a595b