handover_test: change 'meas-rep' params to bts-trx-ts-ss nr

So far the 'meas-rep' expects the index of the MS in order of appearance, to
send a measurement report for that MS. That may seem like a simplification for
human readability, but in fact, it is confusing for a human to keep track which
MS has which index, and to which timeslot it has been handovered. When reading
the tests, it is much easier to read exactly which timeslot the measurement
report is being sent to; which MS came first is inherently not as interesting
as which lchans are currently occupied.

Change-Id: I7ab2ef604196cfe96112dfefb9aa930368bf4812
1 file changed