Bug 1694263: On some 'cn=config' updates bepost_op are not called that leads to lock leak
Description:
The true cause of the hang was that some updates on 'cn=config'
can skip the BEPOST phase. (in this bug it was the maxbersize setting).
The consequence is that the slapi-nis map lock was acquired but not released.
The fix consist to ignore (not lock slapi-nis map) write operation done
on 'cn=config' and 'cn=schema'
https://bugzilla.redhat.com/show_bug.cgi?id=1694263
Signed-off-by: Thierry Bordaz <tbordaz@redhat.com>