northd: fix IPv6-PD with northd IP rework

Since commit 4597317 ("Introduce incremental processing for northd"),
we rely on (partial) IP for ovn-northd. We need to track SB port_binding
option column in order to notify the CMS whenever the controller
receives the IPv6 prefix from the server.

Fixes: 4597317 ("Introduce incremental processing for northd")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: Mark Michelson <mmichels@redhat.com>
Signed-off-by: Numan Siddique <numans@ovn.org>

northd/ovn-northd.c

@@ -786,7 +786,8 @@ main(int argc, char *argv[])
                        &sbrec_port_binding_col_parent_port);
     add_column_noalert(ovnsb_idl_loop.idl, &sbrec_port_binding_col_tag);
     add_column_noalert(ovnsb_idl_loop.idl, &sbrec_port_binding_col_type);
-    add_column_noalert(ovnsb_idl_loop.idl, &sbrec_port_binding_col_options);
+    ovsdb_idl_track_add_column(ovnsb_idl_loop.idl,
+                               &sbrec_port_binding_col_options);
     add_column_noalert(ovnsb_idl_loop.idl, &sbrec_port_binding_col_mac);
     add_column_noalert(ovnsb_idl_loop.idl,
                        &sbrec_port_binding_col_nat_addresses);