Add /mnt/appfuse mount point to init.rc.

BUG=25755834

Change-Id: I00b1185aec7a95baa6ef2f345a49761f3d006c4d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 25cb64f..ff58666 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -76,6 +76,7 @@
     mkdir /mnt/user 0755 root root
     mkdir /mnt/user/0 0755 root root
     mkdir /mnt/expand 0771 system system
+    mkdir /mnt/appfuse 0711 root root
 
     # Storage views to support runtime permissions
     mkdir /mnt/runtime 0700 root root