add init script and screenrc for l1fwd

contrib/l1fwd.init

@@ -0,0 +1,31 @@
+#!/bin/sh
+### BEGIN INIT INFO
+# Provides:          l1fwd
+# Required-Start:    
+# Required-Stop:     $local_fs
+# Default-Start:     5
+# Default-Stop:      0 6
+# Short-Description: Start screen session with l1fwd software
+# Description:       
+### END INIT INFO
+
+. /etc/default/rcS
+
+case "$1" in
+        start)
+		/usr/bin/screen -d -m -c /etc/osmocom/screenrc-l1fwd
+                ;;
+	stop)
+		echo "This script doesn't support stop"
+                exit 1
+		;;
+        restart|reload|force-reload)
+                exit 0
+                ;;
+	show)
+		;;
+        *)
+                echo "Usage: sysmobts {start|stop|show|reload|restart}" >&2
+                exit 1
+                ;;
+esac

contrib/screenrc-l1fwd

@@ -0,0 +1,3 @@
+chdir /tmp
+screen -t BTS 0 /etc/osmocom/respawn.sh /usr/bin/l1fwd-proxy
+detach