Ticket 408 - Backport of Normalized DN Cache
Description: commit 2a8da7ea76d15906fdb98b47534fc3447f12c752 set the
type of nsslapd-ndn-cache-enabled to CONFIG_INT. This patch corrects
it to CONFIG_ON_OFF.
(cherry picked from commit 37d569605e23b94192b7aaf06fb44dca4a73fe0e)