openflow_input: add BSN extensions to OF 1.4
I left out the following extensions that are no longer used or have been
superceded by the standard:
- bsn_disable_split_horizon_check
- bsn_role_status
- bsn_global_vrf_allowed
diff --git a/openflow_input/bsn_flow_checksum b/openflow_input/bsn_flow_checksum
index bfa5f3c..35b658f 100644
--- a/openflow_input/bsn_flow_checksum
+++ b/openflow_input/bsn_flow_checksum
@@ -29,6 +29,7 @@
// governing permissions and limitations under the EPL.
#version 4
+#version 5
// Retrieves the checksum for every bucket in a table. The entries are ordered
// by bucket index.