Specifying an already existing CT attribute causes missing LDAP data

[fschrempf]

Using the below config, all groups are missing from the LDAP directory tree. Changing the attribute name to mail makes things work properly again.

attributes:  # fields to add to user 
      - name: email
        default: none
        replacements: # add value to user with id
          - id: 1
            value: test@test