AAA Support for Sun Proxy LDAP server

Issue

• I configured RHEV-M to browse our LDAP tree. Using rfc2307 compatible schema, RHEV-M is now able to find the right users in the baseDN, but when I try to add a LDAP user I receive the following error in engine.log:

2015-07-27 09:56:25,309 INFO  [org.ovirt.engine.core.bll.aaa.AddUserCommand] (ajp-/127.0.0.1:8702-9) [28546897] Running command: AddUserCommand internal: false. Entities affected :  ID: aaa00000-0000-0000-0000-123456789aaa Type: SystemAction group MANIPULATE_USERS with role type ADMIN
2015-07-27 09:56:25,313 ERROR [org.ovirt.engine.core.bll.aaa.AddUserCommand] (ajp-/127.0.0.1:8702-9) [28546897] Command org.ovirt.engine.core.bll.aaa.AddUserCommand throw exception: org.springframework.dao.DataIntegrityViolationException: CallableStatementCallback; SQL [{call insertuser(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)}]; ERROR: null value in column "external_id" violates not-null constraint
  Where: SQL statement "INSERT INTO users(department, domain, email, groups, name, note, role, active, surname, user_id, username, group_ids, external_id,namespace) VALUES( $1 ,  $2 ,  $3 ,  $4 ,  $5 ,  $6 ,  $7 ,  $8 ,  $9 ,  $10 ,  $11 ,  $12 ,  $13 ,  $14 )"
PL/pgSQL function "insertuser" line 2 at SQL statement; nested exception is org.postgresql.util.PSQLException: ERROR: null value in column "external_id" violates not-null constraint
  Where: SQL statement "INSERT INTO users(department, domain, email, groups, name, note, role, active, surname, user_id, username, group_ids, external_id,namespace) VALUES( $1 ,  $2 ,  $3 ,  $4 ,  $5 ,  $6 ,  $7 ,  $8 ,  $9 ,  $10 ,  $11 ,  $12 ,  $13 ,  $14 )"