ttcn3: Increase TTCN3 IPA UP to have sysmobts tests working

It was spotted that most TTCN3 tests run against sysmobts fail because
of following error:
BTS_Tests.ttcn:643 Test case TC_chan_act_react finished. Verdict: fail reason: "BTS_Tests.ttcn:399 : Timeout waiting for ASP_IPA_EVENT_UP"

Looking carefully at the logs and pcap files, it was seen that usually
sysmobts tries to connect around 1 second after the TTCN3 tests decides
it's enough. Current timeout was default of 15 seconds. Let's set it to
30 seconds.

While at it, also set mp_ipa_up_delay, as initially set to 3 seconds in
osmo-ttcn3-hacks.git d95f340a01fe7e9fe59f02b6ec4f9d018feb8c75 having
physical tests in mind.

Change-Id: I25c0a49851865291c6251556aff139961c3d4166
diff --git a/ttcn3/suites/ttcn3_bts_tests/scripts/BTS_Tests.cfg.tmpl b/ttcn3/suites/ttcn3_bts_tests/scripts/BTS_Tests.cfg.tmpl
index 92f0faa..eae6063 100644
--- a/ttcn3/suites/ttcn3_bts_tests/scripts/BTS_Tests.cfg.tmpl
+++ b/ttcn3/suites/ttcn3_bts_tests/scripts/BTS_Tests.cfg.tmpl
@@ -22,6 +22,8 @@
 BTS_Tests.mp_tolerance_rxlev := 10;
 BTS_Tests.mp_tolerance_rxqual := 1;
 BTS_Tests.mp_trx0_arfcn := 868
+BTS_Tests.mp_ipa_up_timeout := 30.0
+BTS_Tests.mp_ipa_up_delay := 3.0
 
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