Add termination of stacked POX processes to cleanup function
Add termination of stacked POX processes to cleanup function

hsnlab/escape,5GExchange/escape,5GExchange/escape,5GExchange/escape,5GExchange/escape,5GExchange/escape,hsnlab/escape,5GExchange/escape,hsnlab/escape,hsnlab/escape,hsnlab/escape,hsnlab/escape