Ticket 48267 - Add config setting to MO plugin to add objectclass
Description: Add setting to plugin to auto add a predefined
objectclass that allows "memberOf" attribute
https://fedorahosted.org/389/ticket/48267
Reviewed by: nhosoi(Thanks!)
(cherry picked from commit b2fe2aab7548a91beb0907071ae66d4e46f2095f)