heat engine : error on resource update with invalid properties

If properties validation fails, raise an error so the resource is
marked as UPDATE_FAILED, we don't want to go ahead and try running
handle_update anyway

Change-Id: I5f748b9de6a2b02d26421a5b6e0b1b5f0db25d0c
Signed-off-by: Steven Hardy <shardy@redhat.com>
Merge "heat engine : error on resource update with invalid properties"