Netlify CLI now supports streaming logs: let's use it

This has been added in netlify-cli@17.5.0 🎉

* `netlify logs:deploy` to have an interactive selector for currently active builds

* `netlify logs:functions` to have an interactive selector for all functions on a site

* `netlify logs:functions my-function-name` to instantly stream the logs for a given function, in this case my-function-name

We could use that last command here:

ecosystem-tests/platforms-serverless/netlify-cli/finally.sh

Line 3 in cbf51c9

    
           echo "TODO: Stream Netlify logs (when available via https://github.com/netlify/cli/issues/119 )"

Probably a low priority task.