Require OsmoMgw in OsmoBsc and update tests

Since Change-Id Ia2882b7ca31a3219c676986e85045fa08a425d7a, osmo-bsc
uses osmo-mgw and utilizes libosmo-mgcp-client to talk to it.

This commit fixes latest constant failures in voice suite.

Change-Id: I1dadd781a357fce33e7bde55e4bcbdaeb4633359
diff --git a/suites/aoip_sms/mo_mt_sms.py b/suites/aoip_sms/mo_mt_sms.py
index 217d807..a7c1f48 100755
--- a/suites/aoip_sms/mo_mt_sms.py
+++ b/suites/aoip_sms/mo_mt_sms.py
@@ -4,8 +4,9 @@
 hlr = suite.hlr()
 bts = suite.bts()
 mgcpgw = suite.mgcpgw(bts_ip=bts.remote_addr())
+mgw_bsc = suite.mgw()
 msc = suite.msc(hlr, mgcpgw)
-bsc = suite.bsc(msc)
+bsc = suite.bsc(msc, mgw_bsc)
 stp = suite.stp()
 ms_mo = suite.modem()
 ms_mt = suite.modem()
@@ -14,6 +15,7 @@
 stp.start()
 msc.start()
 mgcpgw.start()
+mgw_bsc.start()
 
 bsc.bts_add(bts)
 bsc.start()
diff --git a/suites/aoip_sms/suite.conf b/suites/aoip_sms/suite.conf
index 677a95e..28a81ea 100644
--- a/suites/aoip_sms/suite.conf
+++ b/suites/aoip_sms/suite.conf
@@ -1,6 +1,6 @@
 resources:
   ip_address:
-  - times: 5 # msc, bsc, hlr, stp, mgw
+  - times: 6 # msc, bsc, hlr, stp, mgw*2
   bts:
   - times: 1
   modem: