Breaking changes on gRPC 1.27.0

[matang28]

When updating to gRPC 1.27 there are breaking changes on gRPC resolver package (mainly naming changes).

And I've added a go.mod file, so if you accept this one you'll need to change the module definition to yours.

Currently we are working with this version on PROD and everything seems to work fine.

[sercand]

Thanks for the MR.
I will be merging it tomorrow.

[luthfikw]

@sercand when it will released?

[sercand]

@luthfikw I have already tagged v2.4.0.

[luthfikw]

cool thank you @sercand @matang28

[matang28]

Following this issue #11

@sercand I think that we have a problem here, maybe related to the fact that kuberesolver major version is greater than v1, according to go.mod rules:
If an old package and a new package have the same import path, the new package must be backwards compatible with the old package.
(https://research.swtch.com/vgo-import, https://blog.golang.org/v2-go-modules)

Then your module path should be v2 (and the one used by others).

[sercand]

@matang28 I have released v2 of the package before go.mod finalized. Therefore, I just removed go.mod as a quick hack.

[matang28]

@sercand cool, I can verify that v2.4.0+incompatible (latest) works for me...