pre-commit: apply autofixes hooks and fix the rest manually

- markdownlint (manual fix)
- end-of-file-fixer
- requirements-txt-fixer
- trailing-whitespace

scripts/openstack-cleanup/main.py

@@ -61,7 +61,7 @@ def main():
 
         for ip in conn.network.ips():
             fn_if_old(conn.network.delete_ip, ip)
-                
+
         # After removing unnecessary subnet from router, retry to delete ports
         map_if_old(conn.network.delete_port,
                    conn.network.ports())