letsencrypt

The OAuth2Client library has been deprecated by Google since 2018, and there is a replacement library google-auth.

https://github.com/certbot/certbot/blob/8b610239bfcf7aac06f6e36d09a5abba3ba87047/certbot-dns-google/certbot_dns_google/_internal/dns_google.py#L8

Checklist

• Dependencies installed
• No typos
• Searched existing issues and docs

Issue Description

When using the RateLimiter Middleware with a rate between 0 and 1 all events will be rejected instead of applying the specified rate. E.g.: e.Use(middleware.RateLimiter(middleware.NewRateLimiterMemoryStore(0.5)))

I am not saying that it is a common use case to have

I noticed the following errors from go vet:

$ go vet ./...
# github.com/jetstack/cert-manager/cmd/webhook/app/testing
cmd/webhook/app/testing/testwebhook.go:106:4: call to (*T).Fatalf from a non-test goroutine
# github.com/jetstack/cert-manager/test/integration/framework
test/integration/framework/helpers.go:68:4: call to (*T).Fatal from a non-test goroutine
# github.com/jetstack