CBQE-0: fixes in upgrade logs

Change-Id: I9ad77ce08e0814972d2269daf7d19c39319dda92
Reviewed-on: http://review.couchbase.org/30324
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>