asterisk: pjsip.conf: Set IMEINewer asterisk VoLTE code being developed (jolly/work) now has a configto set the IMEI instead of the whole contact header. Use it.Change-Id: I5d4584fac309bea4afe3929bdca047c31c93b457
ttcn3-ggsn-test/jenkins: tweak loop logicIterate over TEST_CONFIGS instead of TEST_CONFIGS_ALL and then filteringwith test_config_enabled.Change-Id: Ie7701abe6ab7cff139766eca9240e0f26af32231