AuthLDAPFilter and LDAPFilter are redundant

Concerned version

Version: 2.0.7

Platform: (Nginx/Apache/Node.js)

Summary

I'm not sure how LDAP filters worked before 2.0, but currently, there are two configuration settings that do the same thing:

If AuthLDAPFilter is not defined, LDAPFilter will be used

But LDAPFilter is used nowhere else.

see ::Portal::Lib::LDAP

Possible fixes

One of these options should be removed to avoid confusion. We must provide an upgrade path to prevent installations that relied on either of these settings to upgrade without breaking.