runner: Iterate over each Entry in a Map

Change-Id: I48de54ea88e7fd9f2d903c172eb2b6e1a5b73edd
Reviewed-on: https://gerrit.libreoffice.org/11918
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>