* bsc: add TC_assignment_codec_amr_startmode_cruft
* bsc: add tests for AMR 'start-mode auto'
* bsc: set the AMR start-mode that the tests expect
* add f_vty_cfg_bts(), f_vty_cfg_msc()
* add f_vty_config3(), to run N commands on a sub-node
* pgw: Add TC_createSession_ping4_256 to test 256 parallel sessions
* pgw: Don't wait for 10s timeout if starting a ping that takes 10s
* pgw: Initial testsuite for a PGW (Packet Gateway in the EPC)
* Add GTPv2_Emulation component