CBLT-283:  s3cmd --config=/var/www/.s3cfg

Change-Id: Ibb2d6869793f451e475214d432cf22bbee45be27
Reviewed-on: http://review.couchbase.org/37002
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>