Spawn package uses static default value for KAPOW_DATA_URL

[hhurtado]

Spawn function uses a constant to assign value to the environmental variable KAPOW_DATA_URL if not set in the ciurrent environment but should use the current listen address or the data server as could be set using command line parameter.

[nilp0inter]

Until this gets fixed users can set the KAPOW_DATA_URL variable directly in theirs route scripts.

kapow server --data-bind 127.0.0.1:31337
kapow route set /hi -c 'export KAPOW_DATA_URL="http://127.0.0.1:31337/"; ... your normal script ...'