s4-openldap: Restored openldap-related options to the provision script

At the moment they are only available if TEST_LDAP=yes to avoid accidental use
as the openldap backend is still failing some tests

Signed-off-by: Nadezhda Ivanova <nivanova@symas.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Nadezhda Ivanova <nivanova@samba.org>
Autobuild-Date(master): Thu Sep 26 07:31:05 CEST 2013 on sn-devel-104
dsdb: Convert the full string from UTF16 to UTF8, including embedded NULLs

Bug: https://bugzilla.samba.org/show_bug.cgi?id=8077
Note that this doesn't fix the userParameters problem
completely, but it doesn't truncate the userParameters value
anymore.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Sep 26 22:05:12 CEST 2013 on sn-devel-104