Use upstream ldap library

[gwelch-contegix]

https://github.com/go-ldap/ldap/v3 is kept far more up to date than https://github.com/glauth/ldap which is still at almost the same commit as https://github.com/nmcclain/ldap

All of the ldap server implementation does not depend on any internal parts of the API and can be separated into it's own package see https://github.com/gwelch-contegix/ldaps as an example for how this can be done and https://github.com/gwelch-contegix/glauth @ 3d1e075 for an example for how this would look for glauth

[Fusion]

Oh, thanks for that! We are always on the lookout for cleaner ways to integrate packages.
In addition, yes our LDAP version is getting a bit long in the tooth. Going to review your example.