Add dns_zones API

[bertvansteen]

This PR is a continuation of PR #163, all credits go to @futuregerald for describing the initial API, I implemented the changes requested by @kitop.

PR #207 is also related: that PR is missing the generated GO code.

[netlify]

Deploy preview for open-api ready!

Built with commit c6ec6b5

https://deploy-preview-211--open-api.netlify.app

[bertvansteen]

Any update on this PR? There are 3 PR's open for the same API. I want to add the DNS capability to the netlify-terraform provider.

[ldez]

@bertvansteen I had a lot of expectations on this PR. Are you closing it because no one is responding or because there has been a change in the code base?

[ehmicky]

Sorry for not code reviewing this faster @bertvansteen @ldez
I unfortunately cannot help here since I don't know Go.

@mraerino @vbrown608 @kitop Would you be able to check it out? Thanks!

[ldez]

Friendly ping @mraerino @vbrown608 @kitop

[kitop]

Hi @bertvansteen and @ldez, looking at it now, and noticed it doesn't show in the deploy preview. Can you rebase and add tags: [dnsZone] to all new endpoints so they show in the sidebar?

[bertvansteen]

Thanks @kitop, I rebased the branch, added the [dns] tag and ran "make all" inside a golang;1.13 docker container.

[keiko713]

thanks for the contribution 🎉 I went and left several notes, mostly the small ones or additional params (but didn't update it consistently, I'm likely missing something), overall it's looking good :)
also, I'm sorry but I just merged the PR of switching CI from travis to GitHub Action after your rebase. another rebase would be nice, but not required.

[bertvansteen]

no problem, I'll adopt the suggested changes and will do a rebase.

[keiko713]

Sorry forgot to circle back here. Thanks for the rebase, looking great! Going to merge this.
I'm going to wait the release a bit as there are other open PRs that could go with this.