message: start_px4_sitl.sh: don't use : in path name
diff: @@ -44,11 +44,7 @@ mkdir -p $log_dir
  export NO_PXH=1
  # The logs are saved with a timestamp.
  -if [[ "$unamestr" == 'Linux' ]]; then
  - timestamp=`date --iso-8601=seconds`
  -else
  - timestamp=`date +%Y-%m-%dT%H:%M:%S%z`
  -fi
  +timestamp=`date +%Y-%m-%dT%H-%M-%S%z`
  logfile_path=$log_dir/px4_sitl-$timestamp.log
  