fix docker test daemon to work with docker 1.13

launch-docker-test-daemon

@@ -9,6 +9,7 @@ die()
 set -e
 
 vol="`pwd`/data/controller"
+vol="`realpath "$vol"`"
 
 . prepare.sh
 
@@ -20,6 +21,7 @@ dir="$vol/test-daemon"
 pidfile="$dir/docker.pid"
 sock="$dir/docker.sock"
 graph="$dir/graph"
+run="$dir/run"
 
 [ -d "$dir" ] || mkdir "$dir"
 
@@ -48,8 +50,9 @@ create_network()
 create_network &
 
 exec sudo dockerd \
+	--exec-root "$run"	\
 	--graph "$graph"	\
 	--host  "$DOCKER_HOST"	\
 	--pidfile "$pidfile"	\
-	-s overlay
+	-s overlay2