PAD-156: Update user-data template, include health-check-script

Signed-off-by: Oz Tiram <[email protected]>

user-data.template

@@ -1,4 +1,12 @@
 #cloud-config
+
+# This is currently required to enable a two node cluster
+# should be removed in the future and only the twoNode section
+# in stylus should control this.
+cluster:
+  env:
+    two-node: "true"
+
 stylus:
   site:
     # host for hubble api to register device.
@@ -14,6 +22,11 @@ stylus:
       key1: value1
       key2: value2
       key3: value3
+    # enable two node cluster and add a custom health check script
+    # see also Dockerfile on how to add this script to the image
+    twoNode:
+       enabled: true
+       health-check-script: /opt/spectrocloud/bin/custom-health-check.sh
 
     # name of the device, this may also be referred to as the edge id or edge host id.  If no edge host name is specified
     # one will be generated from the device serial number.  If stylus cannot the device serial number a random id will