Add ubuntu xenial network service

Signed-off-by: Philip Joseph <philip.joseph@riftio.com>
diff --git a/src/generate_descriptor_pkg.sh b/src/generate_descriptor_pkg.sh
index ae0d7e1..cefd623 100755
--- a/src/generate_descriptor_pkg.sh
+++ b/src/generate_descriptor_pkg.sh
@@ -65,7 +65,6 @@
 VCPU=2
 MEMORY=4096
 STORAGE=10
-CLOUD_INIT='#cloud-config '
 INTERFACES=1
 
 function usage() {
@@ -198,7 +197,7 @@
             # Cloud init file
             cloud-init-file: '${cif}'
 EOF
-    else
+    elif [[ -n ${CLOUD_INIT} ]]; then
         cat >>$desc_file <<EOF
             # Cloud init to use
             cloud-init: '${CLOUD_INIT}'