cord-1458 update template for basic host block

Change-Id: Ia6beea4eba17f75bdf36ca540b27dd207aecc83d
(cherry picked from commit 74bdba63fc36f54d09763d0bf6fe533314c91edd)
diff --git a/config-generator/netconfig.tpl b/config-generator/netconfig.tpl
index 2885e5b..f962a87 100644
--- a/config-generator/netconfig.tpl
+++ b/config-generator/netconfig.tpl
@@ -15,8 +15,10 @@
     "hosts": {
         {{ range $index, $element := .Hosts }}{{ if $index }},
         {{ end }}"{{ .Mac }}/-1": {
-            "ips": ["{{ range $ip := .IpAddresses }}{{ $ip }}{{ end }}"],
-            "location": "{{ .Location.ElementID }}/{{ .Location.Port }}"
+            "basic" : {
+                "ips": ["{{ range $idx_ip, $ip := .IpAddresses }}{{if $idx_ip}},{{end}}{{ $ip }}{{ end }}"],
+                "location": "{{ .Location.ElementID }}/{{ .Location.Port }}"
+            }
         }{{ end }}
     },
     "ports": {