L1CTL_Types.ttcn: accept SacchL1Header in ts_L1CTL_DATA_REQ_SACCH

In BTS_Tests.ttcn we used to compose L1ctlDataReq manually. This
can be done by ts_L1CTL_DATA_REQ_SACCH() template itself, so
let's abstract BTS_Tests.ttcn from doing that.

Change-Id: I1ae948bd0314cdf15c21ce4b6346d5e32f1fcf95
2 files changed