templates: osmo-bts: Use BTS assigned IP addr to bind CTRL and VTY iface

Change-Id: Ib1c3022a6c531ef8c6a5ba31927762806abc37ac
diff --git a/src/osmo_gsm_tester/templates/osmo-bts-sysmo.cfg.tmpl b/src/osmo_gsm_tester/templates/osmo-bts-sysmo.cfg.tmpl
index c9dde86..536e5cb 100644
--- a/src/osmo_gsm_tester/templates/osmo-bts-sysmo.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/osmo-bts-sysmo.cfg.tmpl
@@ -12,6 +12,11 @@
   ! Level required by ready_for_pcu(): pcu info
   logging level pcu info
 !
+line vty
+ bind ${osmo_bts_sysmo.addr}
+ctrl
+ bind ${osmo_bts_sysmo.addr}
+!
 phy 0
  instance 0
 bts 0