bsc-nat: Add sample bsc-nat config for test

Change-Id: I0ab3a4fb66201cd134238f5efcf6ff80033011e3
diff --git a/bsc-nat/osmo-bsc-nat.cfg b/bsc-nat/osmo-bsc-nat.cfg
new file mode 100644
index 0000000..ec1a7c2
--- /dev/null
+++ b/bsc-nat/osmo-bsc-nat.cfg
@@ -0,0 +1,67 @@
+!
+! OsmoBSCNAT (0.12.0.266-2daa9) configuration saved from vty
+!!
+!
+log stderr
+  logging filter all 1
+  logging color 1
+  logging timestamp 1
+  logging level rll notice
+  logging level cc notice
+  logging level mm notice
+  logging level rr notice
+  logging level rsl notice
+  logging level nm info
+  logging level mncc notice
+  logging level pag notice
+  logging level meas notice
+  logging level sccp debug
+  logging level msc notice
+  logging level mgcp notice
+  logging level ho notice
+  logging level db notice
+  logging level ref notice
+  logging level gprs debug
+  logging level ns info
+  logging level bssgp debug
+  logging level llc debug
+  logging level sndcp debug
+  logging level nat notice
+  logging level ctrl notice
+  logging level smpp debug
+  logging level lglobal notice
+  logging level llapd notice
+  logging level linp notice
+  logging level lmux notice
+  logging level lmi notice
+  logging level lmib notice
+  logging level lsms notice
+!
+line vty
+ no login
+!
+mgcp
+  bind ip 127.0.0.1
+  bind port 2427
+  rtp bts-base 4000
+  rtp net-base 16000
+  rtp ip-dscp 0
+  no rtcp-omit
+  sdp audio-payload number 126
+  sdp audio-payload name AMR/8000
+  loop 0
+  number endpoints 32
+  call-agent ip 127.0.0.1
+  rtp transcoder-base 0
+  transcoder-remote-base 4000
+nat
+ msc ip 127.0.0.1
+ msc port 5100
+ token foo
+ timeout auth 2
+ timeout ping 20
+ timeout pong 5
+ ip-dscp 0
+ bscs-config-file bscs.config
+ access-list msceven imsi-allow ^[0-9]*[24680]$
+ access-list mscodd imsi-allow ^[0-9]*[13579]$