Use default prune settings during dep init

[carolynvs]

Now that prune is (almost) absorbed into ensure, dep init should set some safe prune defaults on the generated manifest. init should also apply the prune options against vendor.

[prune]
  go-tests = true
  unused-packages = true

See #952 and #1226 for context.

[arbourd]

I can pick this one up if no one else wants it. 😁

[carolynvs]

It's all yours 🎁

[sdboyer]

definitely want to have this one before we release v0.4.0 - what dep init does will define a standard behavior that folks will follow. a sane default is key.

[arbourd]

Hey folks, just wanted to drop a quick update. Still planning on getting to this one by the end of this upcoming week/weekend. My original plan was this past weekend but I've been sick 🤒

If this blocking v0.4.0 and someone wants to get it done it before this week, feel free to take it. 🤓

[carolynvs]

Feel better!

Also I've updated the OP with the desired default prune settings.

[arbourd]

Excellent! Thank you. That was what I was thinking too -- non-go might be a little over the top for a default setting. 😃

[sdboyer]

@carolynvs we're just keeping this open until we merge the pending prune branch, right?

[carolynvs]

It's just how github works. It doesn't auto-close an issue when a PR is merged into the non-default branch. So once the release branch is merged, then all the issues will be closed.