Flake8 support

[mshytikov]

Hi

This is not a pull request, but just a proof of concept

In our company we prefer to use flake8 over pylint and as a workaround I have created a 'copy-pasted' solution to add the flake8 support to the sonar-python. So now it support both - flake8 and pylint.

It work's for us. The jar with changes can be downloaded here.

Btw. It would be nice to have 'Issues' for the sonar-python project on github.

Regards,
Max

[wenns]

Even if it is not a PR, let me comment it ;)

I think the pylint-sensor implementation is not worth copying: a couple of years of experience building Sonar plugins has shown, that triggering external commands from the plugin is not the best idea. If flake 8 can produce machine-readable reports (json, xml, whatever) then "creating & feed report"-strategy is a much better one.

[vilchik-elena]

As we don't have plans in Flake8 support i'm closing PR