Use IPIPCrossSubnet to avoid encapsulation

Trying to avoid https://issues.redhat.com/browse/OCPBUGS-56096 which
might be caused by IPIP encapsulation issue:
projectcalico/calico#1709

Author: mgencur

ci-operator/step-registry/calico/conf/calico-conf-commands.sh

@@ -48,5 +48,7 @@ spec:
   calicoNetwork:
     nodeAddressAutodetectionV4:
       kubernetes: NodeInternalIP
-    mtu: 1480
+    ipPools:
+      - cidr: 10.128.0.0/14
+        encapsulation: IPIPCrossSubnet
 EOF