Revert "MB-11553 Reduce the min/default/max number of checkpoint items."

This reverts commit a72bea627fe0b9ca2d8f1e53947c9e554a8c67d5.

We observed some performance regression in view indexing building.

Change-Id: Ie7fb174c8d21353f21bc787574876f0445c485f5
Reviewed-on: http://review.couchbase.org/39090
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: Chiyoung Seo <chiyoung@couchbase.com>