Merge pull request #5840 from unclejack/upstart_mounted

Update contrib/init/upstart to "start on local-filesystems"

contrib/init/upstart/docker.conf

@@ -1,6 +1,6 @@
 description "Docker daemon"
 
-start on filesystem
+start on local-filesystems
 stop on runlevel [!2345]
 limit nofile 524288 1048576
 limit nproc 524288 1048576