Revert "Enable swift by default."

This reverts commit 5a5cbf7274a6a50bb766ec590cf885430ed5c5d0.

This breaks on a default openstack install on Ubuntu 12.10,
revert for now until this can be cleaned up to work out of the
box.

Change-Id: I185509cc30bd28e920cdab60fc92129949bd6b0d
diff --git a/exercises/swift.sh b/exercises/swift.sh
index c4ec3e9..46ac2c5 100755
--- a/exercises/swift.sh
+++ b/exercises/swift.sh
@@ -35,7 +35,7 @@
 
 # If swift is not enabled we exit with exitcode 55 which mean
 # exercise is skipped.
-is_service_enabled s-proxy || exit 55
+is_service_enabled swift || exit 55
 
 # Container name
 CONTAINER=ex-swift