Anycast-healthchecker

* Update TODO
* Use lowercase everywhere to simplify log parsing
* Print also the frame stuck
* Remove newline character from the error output
* Implement a more atomic way to update bird conf
* Disable pylint warnings for too-many-arguments
* Store anycast-prefixes.conf under /var/lib/

* Add a module docstring
* Add a warning when all IP prefixes are removed
* Shorten some lines to make pylint happy
* Add module and classes docstrings
* Add support of populating JSON structure
* Rename variable for shorting the length of a line
* Make possible to disable the sending of JSON blobs
* Disable pylint warning attribute-defined-outside-init
* Remove the JSON blob from the log messages
* Wait a bit before starting again the daemon
* Add docstring for a function
* Remove string interpolation within logging calls
* Add version of the daemon in the JSON blob
* Rename a variable for shorting the length of lines
* Add requests module in requirements.txt

* Add support for JSON logging to a remote point

* Catch the error on bird reload due to missing cmd
* Remove unnecessary call to close()

* Update docstring of ip\_prefixes\_check()
* Remove import of an unused exception
* Change the way we handle IP prefixes without check
* Add Ralf Ertzinger in the contributers list
* Add some corrections in README
* Rewrite routing protcol overview
* Add contributers section

* Fix a regression introduced by 168f9aab