Updated gen script to use db info as keyword not positional arguments.

scripts/chip-gen

@@ -25,9 +25,9 @@ workflow = Workflow(
     args.param,
     args.config,
     args.properties,
-    args.host,
-    args.username,
-    args.password,
+    host=args.host,
+    username=args.username,
+    password=args.password,
     execute_site=args.execute_site,
     output_site=args.output_site,
     save_db=args.save_db,