fix linting

4 jobs for !591 with dfazzini_redesign_filter in 28 seconds (queued for 13 seconds)
detached
Status Name Job ID Coverage
  Test
passed check-copyright #17849541

00:00:17

passed check-formatting #17849542

00:00:25

passed python-linting #17849543
cvmfs

00:00:19

 
  .Post
manual update references (for shifters only) #17849544
allowed to fail manual