Add support to `--reporters` flag from Jest

[rhuanbarreto]

This feature will enable me report test results in a junit file format using the flags:

--reporters=default --reporters=jest-junit

This will add the possibility to integrate the test runner more tightly in my CI

[yannbf]

Hey @rhuanbarreto I think you could achieve that directly when running nyc (decoupled from the test runner), by passing reporters to it. Is that the case?

[rhuanbarreto]

nyc works only for code coverage results. Those flags are for Jest reporting the test results for each story run and its play functions.

[penx]

@yannbf for the nyc report, the default is text, so can't we remove --reporter=text from

https://github.com/storybookjs/test-runner/blob/380ed6c3ad6a02b0b71d9b9c55b097e9fbd63fee/bin/test-storybook.js#L66

Then this would respect the reporter from any .nycrc file if present?

Alternatively perhaps the nyc reporter could be a config option? I should have time to work on this if it's wanted.

[rhuanbarreto]

For me v0.6.4 solves the issue. I'm closing it then.