Update Lua-Ldap for current Lua-version
Please update the Lua-ldap package to a current version, so it is compatible with the Lua version (5.3) installed on the system.
Other distributions use a more recent version, which work with the
current Lua-Version 5.3 (see for instance)
(from redmine: issue id 6123, created on 2016-09-08, closed on 2017-05-22)