Configures the LDAP plugin

def ldap_plugin(self):
        """ Configures the LDAP plugin """
        name = self._ask_with_default("Authentication method name (will be displayed on the login page)", "LDAP")
        prefix = self._ask_with_default("Prefix to append to the username before db storage. Usefull when you have more than one auth method with "
                                        "common usernames.", "")
        ldap_host = self._ask_with_default("LDAP Host", "ldap.your.domain.com")

        encryption = 'none'
        while True:
            encryption = self._ask_with_default("Encryption (either 'ssl', 'tls', or 'none')", 'none')
            if encryption not in ['none', 'ssl', 'tls']:
                self._display_error("Invalid value")
            else:
                break

        base_dn = self._ask_with_default("Base DN", "ou=people,c=com")
        request = self._ask_with_default("Request to find a user. '{}' will be replaced by the username", "uid={}")
        require_cert = self._ask_boolean("Require certificate validation?", encryption is not None)

        return {
            "plugin_module": "inginious.frontend.plugins.auth.ldap_auth",
            "host": ldap_host,
            "encryption": encryption,
            "base_dn": base_dn,
            "request": request,
            "prefix": prefix,
            "name": name,
            "require_cert": require_cert
        }