Upgrade to go 1.11 and convert to modules

[gimlet2]

Issue Ref: None

Description:
This is proposal to upgrade project to go 1.11 and convert to modules for dependencies management.

TODOs:

• Ready to review
• Automated Tests
• Docs

[andresmgot]

Hi @gimlet2, can you add a bit of context to this PR? Upgrading Go is a logic movement but using modules is not that clear to me. I am reluctant to change the package system again (we used glide in the past) mostly because dep is also used in the Golang runtime functions and that would be inconsistent.

[gimlet2]

Hi @andresmgot! It is just a proposal. I'm personally not a go developer and for me it is always an issue to setup go project correctly with all those GOPATH, GOROOT, etc.. But recently I've found that it is way simplier if you use go modules. With modules you can just checkout the code in some folder and build it. And you don't need to install additional software - it is already there with go package preinstalled. It supports automatic migration from dep. But I'm facing an issue with CircleCI to make it work =. Feel free to reject it, but for me it looks like go modules is a big step forward in go ecosystem. And I've used dep in the past for my projects too, but I did migrate all of them already.

[andresmgot]

I see, it's indeed a nice feature that this PR has removed 800k lines of code. Apparently modules is still in the experimental phase (until Go v1.13), let's wait at least until v1.12 to add it.

BTW, the tests seem to fail because GOPATH is still needed to build the controller.

If you still want to update go to 1.11 please update this PR, in other case we can tackle that in a different PR.

[gimlet2]

Here is pull request with update of go to 1.11 only #998