Blueprint cli-auth

* Add proper test for swift in client-env.sh
* Remove all VERIFY variables; nothing beyond the 4 OS_ vars is set now
* Update exercises for Keystone 2.0 auth
* swift understands Keystone 2.0 auth now, don't download custom binary
* cleanup uploaded bundle in bundle.sh

Change-Id: I99c818d81534bbf93c0e142513acb80e5fe613ea
diff --git a/exercises/bundle.sh b/exercises/bundle.sh
index ca35c9a..d5c78af 100755
--- a/exercises/bundle.sh
+++ b/exercises/bundle.sh
@@ -46,3 +46,6 @@
     echo "Image $AMI not available within $REGISTER_TIMEOUT seconds"
     exit 1
 fi
+
+# Clean up
+euca-deregister $AMI