Fix trunk scenario for ovn VTEP

When baremetal network uses vxlan or geneve encapsulation
we can't inherit segmentation_type for trunk.

Related-Prod: PRODX-51827
Change-Id: Ief448dbb4949ad9f4c23dd39feaccb5a249047ca
diff --git a/ironic_tempest_plugin/config.py b/ironic_tempest_plugin/config.py
index b880e9d..d727aa8 100644
--- a/ironic_tempest_plugin/config.py
+++ b/ironic_tempest_plugin/config.py
@@ -292,7 +292,12 @@
     cfg.ListOpt('hybrid_topology_bm_netB_network_types',
                 default=['geneve'],
                 help="List of possible network types for BM hybrid topology "
-                     "netB.")
+                     "netB."),
+    cfg.ListOpt('tenant_network_types',
+                default=['vlan'],
+                help="List of possible network types that we can use for BM "
+                     "servers. First network type is default."),
+
 ]
 
 BaremetalFeaturesGroup = [