Revert "Remove stray shuufle_hosts"
Revert "Remove stray shuufle_hosts"

This is an itcl "variable" command, not a vanilla tcl "variable" command,
so the trailing shuffle_hosts is actually a config script that we want to keep.

This reverts commit ab0315f073b1fa14081eec0cc845e869e053bfe4.

flightaware/piaware,flightaware/piaware