Make network name an argument in create-sc-instance

scripts/create-sc-instance

@@ -197,6 +197,11 @@ def main() -> (
         help="provide disk size in GB",
         required=True,
     )
+    parser.add_argument(
+        "--network-name",
+        help="provide disk size in GB",
+        required=True,
+    )
     parser.add_argument(
         "--verbose",
         help="include additional informational messages about what is being done",
@@ -237,7 +242,7 @@ def main() -> (
 
     keypair = get_keypair(conn, args.key_name)
 
-    network_name = "public"
+    network_name = args.network_name
 
     server = conn.compute.find_server(args.fqdn)
     if server is not None: