fix(contrib): preseed all images

Author: PierreKircher

contrib/coreos/user-data.example

@@ -141,7 +141,7 @@ write_files:
     content: |
       #!/bin/bash
 
-      COMPONENTS=(builder cache controller database logger logspout publisher registry router store-daemon store-gateway store-metadata store-monitor store-volume)
+      COMPONENTS=(builder cache controller database logger logspout publisher registry router store-daemon store-gateway store-metadata store-monitor)
       for c in "${COMPONENTS[@]}"; do
         image=`/run/deis/bin/get_image /deis/$c`
         docker history $image >/dev/null 2>&1 || docker pull $image