OCPBUGS-22731: Add IPsec config for n-s traffic

- https://issues.redhat.com/browse/OCPBUGS-22731

Author: jab-rh

modules/nw-ovn-ipsec-north-south-enable.adoc

@@ -81,6 +81,11 @@ $ for role in master worker; do
         WantedBy=multi-user.target
   storage:
     files:
+    - path: /etc/ipsec.d/ipsec-endpoint-config.conf
+      mode: 0400
+      overwrite: true
+      contents:
+        local: ipsec-endpoint-config.conf
     - path: /etc/pki/certs/ca.pem
       mode: 0400
       overwrite: true