bsc: undup pars.sccp_addr_msc and _bsc

Handover testing required passing MSC and BSC addresses to f_tc_* functions and
added pars.handover.sccp_addr_msc and .handover.sccp_addr_bsc.

MSC pool tests added a separate sub-record pars.mscpool which also contains
these two fields.

Move them both up one level, to form a single pair of pars.sccp_addr_msc and
pars.sccp_addr_bsc.

This eliminates the pars.handover sub-record.

Change-Id: Iae81ca58001455099218ce769a97dc6402832490
2 files changed