CBD-1400:  comment out S3 commands, rely on cron job on builds.hq

Change-Id: I621288828081414d189e44621ff18503b8ac73fd
Reviewed-on: http://review.couchbase.org/39248
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>