Sauna

* Added options in HTTP and HTTP-JSON plugins
* Changed exit() to sys.exit()
* Added HTTP-icinga consumer
* Implemented a max retry parameters for consumers
* Added Debian APT plugin
* Added ability for consumers to send checks in batches
* Added Home Assistant MQTT consumer
* Removed old integration with OVH PaaS monitoring
* General cleanup and maintenance

* Plugin Network: improve execution time
* Plugin HTTP Server: allow to serve a web dashboard
* Command OVH Shinken: fix parsing of configuration

- Allow checks to run concurrently in multiple threads
- Plugin HTTP-JSON: fix bug when expected value is not a string
- New plugin SimpleDomain to monitor DNS entries
- New plugin Network to monitor Linux network throughput
- More flexible logging system

- New plugin Disque to monitor the Disque Redis fork
- New plugin HTTP-JSON to monitor REST APIs
- New consumer HTTP server
- Allow to run many times the same consumer with different configuration
- Various improvements

- Allow to send passive host checks via NSCA
- New plugin Dummy

- New plugin Ntpd