improve missing helm error

Author: pinheadmz

src/warnet/control.py

@@ -341,7 +341,7 @@ def filter(path):
         print(f"Error: {e.stderr}")
     except FileNotFoundError as e:
         click.secho(e)
-        click.secho("Please install Helm.", fg="red")
+        click.secho("Please install Helm or re-run `warnet setup`", fg="red")
         sys.exit(1)
 
     # upload scenario files and network data to the init container