controller: have I+P assigning ct_zones for l3gateway ports

When l3gateway ports get added, ct_zones were assigned during
(ct_zones) recomputes, but not by I+P.
Before this patch, test "Migration of CT zone from UUID to name"
was randomly failing, as ct_zone was not assigned by I+P but
a ct_zone recompute happened most of the time (and hence test succeeded).
Test case has been adapted so that ct_zone recompute usually happens
before adding the sw0-lr0 port.

Signed-off-by: Xavier Simonart <[email protected]>
Signed-off-by: Dumitru Ceara <[email protected]>
(cherry picked from commit 971256e)

controller/ovn-controller.c

@@ -2492,9 +2492,10 @@ ct_zones_runtime_data_handler(struct engine_node *node, void *data)
             struct tracked_lport *t_lport = shash_node->data;
             if (strcmp(t_lport->pb->type, "")
                 && strcmp(t_lport->pb->type, "localport")
+                && strcmp(t_lport->pb->type, "l3gateway")
                 && strcmp(t_lport->pb->type, "localnet")) {
-                /* We allocate zone-id's only to VIF, localport, and localnet
-                 * lports. */
+                /* We allocate zone-id's only to VIF, localport, l3gateway,
+                 * and localnet lports. */
                 continue;
             }