Configure LemonLDAP::NG to use SOAP proxy mechanism

LL::NG use 2 internal databases to store its configuration and sessions. It can be configured to use SOAP instead of direct access to those databases (for remote servers).

This mechanism can be used to secure access for remote servers that cross an unsecured network to access to LL::NG databases.

Since version 2.0, same services are available by REST.

Use SOAP for Lemonldap::NG configuration

Steps:

Use SOAP for Lemonldap::NG sessions