fix nova vnc proxy
diff --git a/nova/compute/cluster.yml b/nova/compute/cluster.yml
index 410e358..7eca116 100644
--- a/nova/compute/cluster.yml
+++ b/nova/compute/cluster.yml
@@ -2,6 +2,7 @@
 - service.nova.compute.kvm
 parameters:
   _param:
+    nova_vncproxy_url: http://${_param:cluster_vip_address}:6080
     nova_compute_virtualization: kvm
     nova_compute_ssh_public: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCltIn93BcTMzNK/n2eBze6PyTkmIgdDkeXNR9X4DqE48Va80ojv2pq8xuaBxiNITJzyl+4p4UvTTXo+HmuX8qbHvqgMGXvuPUCpndEfb2r67f6vpMqPwMgBrUg2ZKgN4OsSDHU+H0dia0cEaTjz5pvbUy9lIsSyhrqOUVF9reJq+boAvVEedm8fUqiZuiejAw2D27+rRtdEPgsKMnh3626YEsr963q4rjU/JssV/iKMNu7mk2a+koOrJ+aHvcVU8zJjfA0YghoeVT/I3GLU/MB/4tD/RyR8GM+UYbI4sgAC7ZOCdQyHdJgnEzx3SJIwcS65U0T2XYvn2qXHXqJ9iGZ root@mirantis.com
     nova_compute_ssh_private: |
@@ -43,7 +44,7 @@
       enabled: true
       virtualization: ${_param:nova_compute_virtualization}
       heal_instance_info_cache_interval: 60
-      vncproxy_url: http://${_param:cluster_vip_address}:6080
+      vncproxy_url: ${_param:nova_vncproxy_url}
       bind:
         vnc_address: ${_param:cluster_local_address}
         vnc_port: 6080