certs: minor cleanup
certs: minor cleanup

These error messages were double-logging file names.

bg451/cockroach,petermattis/cockroach,cuongdo/cockroach,bg451/cockroach,nieyy/cockroach,bg451/cockroach,nieyy/cockroach,cuongdo/cockroach,petermattis/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,sunya123/cockroach,petermattis/cockroach,maxlang/cockroach,arjun4084346/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,glycerine/cockroach,cockroachdb/cockroach,nieyy/cockroach,arjun4084346/cockroach,glycerine/cockroach,cuongdo/cockroach,petermattis/cockroach,arjun4084346/cockroach,maxlang/cockroach,sunya123/cockroach,arjun4084346/cockroach,il9ue/cockroach,cuongdo/cockroach,glycerine/cockroach,cockroachdb/cockroach,il9ue/cockroach,sunya123/cockroach,il9ue/cockroach,maxlang/cockroach,veteranlu/cockroach,paperstreet/cockroach,cockroachdb/cockroach,bg451/cockroach,maxlang/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,nieyy/cockroach,cuongdo/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,il9ue/cockroach,vivekmenezes/cockroach,veteranlu/cockroach,il9ue/cockroach,paperstreet/cockroach,sunya123/cockroach,paperstreet/cockroach,maxlang/cockroach,nieyy/cockroach,vivekmenezes/cockroach,petermattis/cockroach,sunya123/cockroach,maxlang/cockroach,vivekmenezes/cockroach,arjun4084346/cockroach,veteranlu/cockroach,veteranlu/cockroach,cockroachdb/cockroach,nieyy/cockroach,petermattis/cockroach,glycerine/cockroach,vivekmenezes/cockroach,sunya123/cockroach,vaibhavarora/cockroach,il9ue/cockroach,veteranlu/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,il9ue/cockroach,arjun4084346/cockroach,nieyy/cockroach,bg451/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,glycerine/cockroach,arjun4084346/cockroach,sunya123/cockroach,cuongdo/cockroach,petermattis/cockroach,cockroachdb/cockroach,petermattis/cockroach,nieyy/cockroach,il9ue/cockroach,vivekmenezes/cockroach,sunya123/cockroach,glycerine/cockroach,maxlang/cockroach,bg451/cockroach,cuongdo/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,bg451/cockroach,glycerine/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,glycerine/cockroach,arjun4084346/cockroach,cuongdo/cockroach,paperstreet/cockroach,paperstreet/cockroach,paperstreet/cockroach,maxlang/cockroach