Add config to change the delay before sending a notification email

[MatMaul]

Signed-off-by: Mathieu Velten mathieu.velten@beta.gouv.fr

Pull Request Checklist

• Pull request is based on the develop branch
• Pull request includes a changelog file.
• Pull request includes a sign off
• Code style is correct
  (run the linters)

[MatMaul]

I am having a look at the throttle mechanism. I think it doesn't really make sense to have a MIN inferior to the delay, so I am thinking about setting THROTTLE_START_MS equals to the delay.

[clokep]

Seems reasonable, but a couple small comments.

[MatMaul]

I've addressed the comments, and set THROTTLE_START_MS to be the specified delay instead of being a constant.

[MatMaul]

We would also need some configuration nobs to tweak throttle max and throttle multiplier, but I was thinking about doing that in another PR. I can add that to this one if you prefer.

[erikjohnston]

Thanks @MatMaul!