* BTS: verify presence of GPRS Indicator in SI4 Rest Octets
* BTS: refactor f_get_si3(), so it can be used to get SI4
* BTS: fix missing GPRS Indicator in SI4 Rest Octets
* BTS: manually compose Rest Octets for SI Type 3 and 4
* library: fix enc_SystemInformation(): properly pad messages
* library: relax length constraints applied to SI Rest Octets
* library: add PADDING attributes to SI3/SI4 Rest Octets
* bscnat: Introduce test TC_ctrl_location
* bscnat: Add function to run actions on test per BSC component
* bscnat: Refactor MSC side code to allow different actions per test
* bscnat: Refactor BSC_MS side code to allow different actions per test
* bscnat: Move generic code to wait for test into its own function
* MSC_Tests: Allow test cases to specify RAN index
* f_perform_lu(): Use f_expect_clear(), reduce code duplication
* Add f_expect_paging() rather than using tr_BSSMAP_Paging directly
* Rename BSSMAP_Emulation -> RAN_Emulation
* BSC_ConnectionHandler: Define SDP template for CN-side CRCX