Add missed network configuration for k8s-ha-calico

Configuration for ens4 was missed.

Change-Id: I7be9140fd6889d56753a9a922e9c30ea70052c9a
diff --git a/classes/cluster/k8s-ha-calico/kubernetes/compute.yml b/classes/cluster/k8s-ha-calico/kubernetes/compute.yml
index 81d740b..e18d628 100644
--- a/classes/cluster/k8s-ha-calico/kubernetes/compute.yml
+++ b/classes/cluster/k8s-ha-calico/kubernetes/compute.yml
@@ -61,3 +61,9 @@
               address: 10.254.0.0
               netmask: 255.255.0.0
               gateway: ${_param:deploy_address}
+        ens4:
+          enabled: true
+          type: eth
+          proto: static
+          address: ${_param:single_address}
+          netmask: '255.255.255.0'