BTS_Tests: tune waiting timeout in TC_rsl_ms_pwr_dyn_up

Since recenly, osmo-bts is using P_CON_INTERVAL=2 by default.  This
means that the MS power loop gets triggered every 4th SACCH block
(1.92s), so we need more time to reach the maximim Tx power.

Change-Id: I9266f7284fcdb0afa3473f575640689e334e89a8
Related: osmo-bts.git I91c505447f68714239a4f033d4f06e91893df201
Related: OS#5517
1 file changed