Fix liveness probe for cilium operator (#6016)

roles/network_plugin/cilium/templates/cilium-deploy.yml.j2

@@ -89,6 +89,11 @@ spec:
           name: cilium-operator
           livenessProbe:
             httpGet:
+{% if cilium_enable_ipv4 %}
+              host: 127.0.0.1
+{% else %}
+              host: host: '[::1]'
+{% endif %}
               path: /healthz
               port: 9234
               scheme: HTTP
@@ -107,6 +112,7 @@ spec:
       restartPolicy: Always
       serviceAccount: cilium-operator
       serviceAccountName: cilium-operator
+      hostNetwork: true
       volumes:
         # To read the etcd config stored in config maps
         - configMap: