up deploys go project with nodejs 8.10 runtime

[codingdiaz]

I created a main.go file and ran up. This prompted me to create an up.json file and deploy the server I wrote.

This yielded:

{
  "name": "recipe-api",
  "profile": "default",
  "regions": [
    "us-east-1"
  ]
}

I checked the runtime for the lambda function it deployed and it was Node.js 8.10

When running in verbose mode I get: `DEBU inferred runtime type=go

[tj]

It's not intuitive but that's actually correct. Binaries can run in the Node runtime fine since they have no dependencies on the runtime, so it's actually doing: tiny nodejs "shim" sends events to -> Up proxy which sends request to -> your app and back.

I tested the latency of a Go-specific shim to skip that first step, but it was negligible, I think it was around 1ms or so at best.