translate_yaml: Change external, gw and ts default subnets to avoid o…

…verlaps.

With IC deployments these defaults are used as base for computing the
subnet (external, gw and ts) that should be used by each zone.

With larger scale tests, e.g., 500 nodes, when using default
values we would get overlapping IPs between external and gw
subnets.

Signed-off-by: Dumitru Ceara <dceara@redhat.com>

ovn-fake-multinode-utils/translate_yaml.py

@@ -102,12 +102,12 @@ class ClusterConfig:
     node_timeout_s: int = 20
     internal_net: str = "16.0.0.0/16"
     internal_net6: str = "16::/64"
-    external_net: str = "3.0.0.0/16"
-    external_net6: str = "3::/64"
-    gw_net: str = "2.0.0.0/16"
-    gw_net6: str = "2::/64"
-    ts_net: str = "30.0.0.0/16"
-    ts_net6: str = "30::/64"
+    external_net: str = "20.0.0.0/16"
+    external_net6: str = "20::/64"
+    gw_net: str = "30.0.0.0/16"
+    gw_net6: str = "30::/64"
+    ts_net: str = "40.0.0.0/16"
+    ts_net6: str = "40::/64"
     cluster_net: str = "16.0.0.0/4"
     cluster_net6: str = "16::/32"
     n_workers: int = 2