JCBC-278: Align default settings in builder.

This changeset makes the defaults for the factory the same when
instantiated through the builder as it would have been when
instantiated directly.

Change-Id: Ibb8d20a23d1aab78c130f95cadcb36ee9a784ff2
Reviewed-on: http://review.couchbase.org/25448
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>