Fixed sorting of output in sshkeys_root
Fixed sorting of output in sshkeys_root

- Using uniqueList and sort together in a foreach didn't
  work, so we perform each operation separately, before
  the cycle, and assign the results back to sourcing array.

CESNET/perun-services,CESNET/perun-services,zlamalp/perun-services,zlamalp/perun-services,zlamalp/perun-services,CESNET/perun-services,CESNET/perun-services,zlamalp/perun-services