Introduce NS test cases

Related: SYS#5208
Change-Id: Ic619a374b88879d3116f8f28afb14401c3e3192b
diff --git a/ns/osmo-ns.fr.cfg b/ns/osmo-ns.fr.cfg
new file mode 100644
index 0000000..d1109ab
--- /dev/null
+++ b/ns/osmo-ns.fr.cfg
@@ -0,0 +1,55 @@
+log gsmtap 127.0.0.1
+ logging level set-all debug
+
+log stderr
+ logging filter all 1
+ logging print level 1
+ logging print category 1
+ logging print category-hex 0
+ logging print file basename last
+ logging print extended-timestamp 1
+ logging level set-all debug
+!
+stats interval 0
+stats reporter statsd
+ prefix TTCN3
+ level subscriber
+ remote-ip 127.0.0.1
+ remote-port 8125
+ flush-period 1
+ mtu 1024
+ enable
+
+line vty
+ no login
+ bind 127.0.0.1
+
+ns
+ bind fr hdlcnet1
+  fr hdlcnet1 frnet
+ bind fr hdlcnet2
+  fr hdlcnet2 frnet
+ bind fr hdlcnet3
+  fr hdlcnet3 frnet
+ bind fr hdlcnet4
+  fr hdlcnet4 frnet
+ bind fr hdlcnet5
+  fr hdlcnet5 frnet
+ bind fr hdlcnet6
+  fr hdlcnet6 frnet
+ bind fr hdlcnet7
+  fr hdlcnet7 frnet
+ bind fr hdlcnet8
+  fr hdlcnet8 frnet
+ nse 2001
+  nsvc fr hdlcnet1 dlci 16 nsvci 1
+  nsvc fr hdlcnet2 dlci 17 nsvci 2
+  nsvc fr hdlcnet3 dlci 18 nsvci 3
+  nsvc fr hdlcnet4 dlci 19 nsvci 4
+ nse 2002
+  nsvc fr hdlcnet5 dlci 20 nsvci 5
+  nsvc fr hdlcnet6 dlci 21 nsvci 6
+ nse 2003
+  nsvc fr hdlcnet7 dlci 22 nsvci 7
+  nsvc fr hdlcnet8 dlci 23 nsvci 8
+