kube-cert-manager shouldn't create an account per certificate

[mikebryant]

We're having a lot of issues due to the rate limit change (https://community.letsencrypt.org/t/change-in-rate-limits/37120)

It should re-use accounts if it already has one for the right email

[luna-duclos]

I was not aware this was changed, we indeed need to update our code

[rochdev]

Is this still a problem?

[anderspetersson]

Yes. I ran into this today.

[gambol99]

a fix appears to have been submitted here .. I guess the outstanding question being if the certificate has already been requested what would happen?