login proxy: Log "disconnecting" message also with login_log_format_elements.
login proxy: Log "disconnecting" message also with login_log_format_elements.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot