Remove fragmented file if file transfer is interrupted

Related: Issue #511
MR !138

Try to remove fragmented file (partial file if it is the case) if
file transfer is interrupted by any reason. Task cancellation and
any error is ignored during the attempt.
2 jobs for !138 with issue_511_2 in 6 minutes and 8 seconds (queued for 2 seconds)
detached
Status Job ID Name Coverage
  Build
passed #17022
build

00:02:20

 
  Distcheck
passed #17023
distcheck

00:03:47