TC_createSession_ping4_256 PGW_Tests

Regression

Failing for the past 1 build since #1418

Took 19 sec (from Titan)

Stack Trace

"GTPv1U_Emulation.ttcnpp:438 : timeout (15.000000 seconds) waiting for user-plane program PID 6639 termination"
      PGW_Tests.ttcn:1128 PGW_Tests control part
      PGW_Tests.ttcn:992 TC_createSession_ping4_256 testcase