Why AD tree is shown as user name when trying to list user in OpenShift Container Platform?

Issue

• An OCN-Active-Directory as identityProvider is configured in /etc/origin/master/master-config.yaml file on master server. However the oc get user show the name of a technical user as a ldap tree.

[root@ master]# oc get user
NAME                                                    UID                         FULL NAME    IDENTITIES
CN=exampleuser,OU=Users,OU=ORG,DC=example,DC=com   xxxxxxxx-xxxx-xxxx-xxxx-xxxxxx   exampleuser   OCN-Active-Directory:CN=exampleuser,OU=Users,OU=ORG,DC=example,DC=com

Normal user entry looks as below:

exampleuser2 xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx  example, user2  OCN-Active-Directory:CN=exampleuser2,OU=NewUsers,OU=ORG,DC=example,DC=com

Following are entries from master-config.yaml file.

- challenge: true
    login: true
    mappingMethod: claim
    name: OCN-Active-Directory
    provider:
      apiVersion: v1
      attributes:
        email:
        - mail
        id:
        - dn
        name:
        - displayName
        preferredUsername:
        - uid
      bindDN: "CN=exampleuser,OU=Users,OU=ORG,DC=example,DC=com"
      bindPassword: password
      ca: ""
      insecure: true
      kind: LDAPPasswordIdentityProvider
      url: ldap://ldapserver.example.com/OU=Users,OU=ORG,DC=example,DC=com?sAMAccountName?sub?(objectClass=organizationalPerson)