Fix for OPENAM-3428 - review: CR-3076 Modified the IdRepo setting handling to pre 11 state: * auth-naming-attr is only used when performing authentication to find the user * users-search-attr is now used everywhere else to find the user * There was also a bug in the search method: it wasn't returning the search attribute's value, instead it always returned the RDN's value.

Fix for OPENAM-3428 - review: CR-3076 Modified the IdRepo setting handling to pre 11 state: * auth-naming-attr is only used when performing authentication to find the user * users-search-attr is now used everywhere else to find the user * There was also a bug in the search method: it wasn't returning the search attribute's value, instead it always returned the RDN's value.