PCBC-159 Fix incorrect timeouts
PCBC-159 Fix incorrect timeouts

The code that decoded the information in the observe response
didn't interpret the values correctly. The ttr and ttp fields
are not related to the document itself, but _AVERAGE_ values
for the cluster.

Change-Id: I897e8a651b449a6e5ad15f063cc184a67e4ae438
Reviewed-on: http://review.couchbase.org/23103
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>

couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase