Truncate check HTTP check output if too long

Feature Description

I'd like the output from HTTP checks to be truncated if it's too long. Either automatically or via configuration option that specifies number of lines/characters for example.

Use Case(s)

Many services don't provide a sensible health check endpoint, which often results in having to use / or /index.html as check, but that can often result in a massive HTML response that makes the Consul UI for checks harder to navigate due to the size.