Univention Corporate Server 3.2 erratum 199 (bugfix)

* A locking table has been added to the S4 connector which is used to
  avoid the synchronisation of incomplete objects.
* A synchronization error for the telephone number has been fixed.
* The inital group membership sync has been fixed if the group exists
  on both sides and the group members are different.
* Objects which are deleted in Samba 4 are now recursively removed in
  OpenLDAP.
* The sync_mode is now being checked in the post modify membership update 
  functions.
* The S4 connector doesn't no longer delete the OpenLDA domain
  controller object if the deleted Samba 4 object was a Windows
  computer.