bsc: Verify presence of MS Power Parameters IE on one test

Otherwise most tests in bsc-latest fail because in latest release BSC
never sends that IE.

Related: OS#4244
Change-Id: I725836784a7900d2ea51eae188c2c279e8639dbf
diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn
index 09190e3..0141522 100644
--- a/bsc/MSC_ConnectionHandler.ttcn
+++ b/bsc/MSC_ConnectionHandler.ttcn
@@ -527,6 +527,7 @@
 	TestHdlrParamsLcls lcls,
 	TestHdlrParamsHandover handover optional,
 	uint5_t 	exp_ms_power_level,
+	boolean         exp_ms_power_params,
 	boolean		aoip,
 	boolean		use_osmux
 };
@@ -553,6 +554,7 @@
 	},
 	handover := omit,
 	exp_ms_power_level := 7, /* calculated from osmo-bsc.cfg "ms max power" */
+	exp_ms_power_params := false,
 	aoip := true,
 	use_osmux := false
 }
@@ -762,7 +764,7 @@
 	/* FIXME: validate RSL_IE_ACT_TYPE, RSL_IE_CHAN_MODE, RSL_IE_CHAN_IDENT, RSL_IE_BS_POWER,
 	 * RSL_IE_TIMING_ADVANCE */
 
-	if (not f_rsl_find_ie(chan_act, RSL_IE_MS_POWER_PARAM, ms_power_param)) {
+	if (g_pars.exp_ms_power_params and not f_rsl_find_ie(chan_act, RSL_IE_MS_POWER_PARAM, ms_power_param)) {
 		Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "IE MS Power Parameters not found in CHAN ACT");
 	}