templates: Improve cs7 config in osmo-{bsc,msc}

Change-Id: I0aa0057c85e606d45e67d01b818db7549033bdbd
diff --git a/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl b/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
index 572e765..a03bb0b 100644
--- a/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
@@ -13,9 +13,10 @@
 e1_input
  e1_line 0 driver ipa
  ipa bind ${bsc.ip_address.addr}
-cs7 instance 1
+cs7 instance 0
  point-code 0.0.2
  asp asp0 2905 0 m3ua
+  local-ip ${bsc.ip_address.addr}
   remote-ip ${stp.ip_address.addr}
  as as0 m3ua
   asp asp0