Adding parameter to support remote ldap

ldapi seems to only work if there is a ldap server installed in the same machine.

I added the ldap_remote parameter so I can query that remote ldap server, this works perfect for me.

I have no need to install a ldap server locally since there is already another process that creates that ldap server, neither I have the intention to run this on the ldap server I just need to query this remotely.

Thanks for the module works great for my purposes.