On OpenShift Container Platform LDAP authentication fails with error "E0417 Error authenticating user with provider AD user not found"

Issue

• After some changes done to Active Directory structure LDAP authenticaton is not working anymore.

Apr 17 20:20:53 master atomic-openshift-master-api: E0417 20:20:53.089243    3378 login.go:176] Error authenticating "user" with provider "Active-Directory": useridentitymapping.user.openshift.io "Active-Directory:CN=User\\, OU=ORG,DC=example,DC=com" not found
Apr 17 21:02:53 master atomic-openshift-master-api: E0417 21:02:53.264243    3378 login.go:176] Error authenticating "user" with provider "Active-Directory": users.user.openshift.io "user" not found