Allocating a pseudo-TTY (-t, --tty) fails when 'run' is executed
inside of a Jenkins or cron script. This change fixes
ttcn3-bts-test, which invokes 'run' to fetch the config files.
Change-Id: If22f682be4f004c5bb43e65098079a4f4fe6158d
Fixes: If15461240f3037c142c176fc7da745a1701ae3f8
This set up allows running a typical osmo-gsm-tester set up with a main
unit (ogt-master) attached to one (or more) slaves where resources are
located and processes are run.
As an example, current config allows running an iperf3 test over an srsLTE
stack using the ZeroMQ backend.
Change-Id: Iac7c0b613048ce332642d3957c55cc7c53b56d42