Support for configuring the monit webserver and for M/Monit

- Support for defining bind address for monit webserver
- Support for limiting access to webservers (host/credentials)
- Support for connecting monit to a M/Monit instance
- Packet filtering support

Some code taken from the Bacula module, (C) Samuli Seppänen 2013.

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Signed-off-by: Samuli Seppänen <samuli.seppanen@gmail.com>