cli: permit retries if modification of a mirror fails
cli: permit retries if modification of a mirror fails

kib/mirrorbits,wsnipex/mirrorbits,kArTeL/mirrorbits,kib/mirrorbits,wsnipex/mirrorbits,etix/mirrorbits,Myself5/mirrorbits,etix/mirrorbits,kib/mirrorbits,wsnipex/mirrorbits,etix/mirrorbits,kArTeL/mirrorbits,Myself5/mirrorbits,Myself5/mirrorbits,kArTeL/mirrorbits