Drop Go 1.13

[kzys]

github.com/go-openapi/runtime's latest version doesn't work with Go
1.13 due to net/http.

Since Go 1.13 is no longer maintained by the Go team, it would be
better to just drop the version rather than asking the package owner
to support the version.

https://pkg.go.dev/net/http#Header.Values

Signed-off-by: Kazuyoshi Kato [email protected]

Issue #, if available:

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[Kern--]

There is an open issue in go-openapi/runtime that seems to be asking for the maintainers to continue supporting Go 1.13 (go-openapi/runtime#217).

Since Go 1.13 is no longer maintained by the Go team

Neither is Go 1.14 or 1.15. Should we clarify a policy for which go versions are supported or is it too situational?

[kzys]

I agree that we should clarify the policy.

Regarding specific Go versions, I'd like to make the package usable on major Linux distributions. The definition of "major" is subjective though. For example, Amazon Linux 2 and Debian 11 (bullseye) only have Go 1.15. So I don't want to drop Go 1.15 support at this time.

[Kern--]

Ubuntu 18.04 only has ships up to go 1.13 and Ubuntu 20.04 up to go 1.4.

Follow up from this should be to define support policy which probably also defines which distros we consider to be major and at which versions. I think that decision will apply to firectl and firecracker-containerd as well.

[kzys]

firecracker-containerd is slightly easier since containerd upgrades Go somewhat aggressively. This SDK and firectl are harder, or we have more freedom to support which Go versions.

I've cut #364 to define supported Go versions. For now, I'd like to drop Go 1.13, update OpenAPI packages to update mongo-driver.