Exclude unused goos/goarch flavours from goreleaser config

[sergei-ivanov]

Suggestion

Add explicit ignores to goreleaser config for the following flavours.

  ignore:
    - goos: darwin
      goarch: '386'
    - goos: darwin
      goarch: 'arm'
    - goos: freebsd
      goarch: 'arm64'
    - goos: windows
      goarch: 'arm'
    - goos: windows
      goarch: 'arm64'

Analysis

Currently, the suggested goreleaser configuration is as below, and go 1.17 builds almost the entire matrix. But the problem is that some of the flavours are not officially supported/endorsed by Terraform, and building them wastes resources and CI credits.

  goos:
    - freebsd
    - windows
    - linux
    - darwin
  goarch:
    - amd64
    - '386'
    - arm
    - arm64
  ignore:
    - goos: darwin
      goarch: '386'

According to the provider docs that link to this project, only the following flavours need to be built:

goos\goarch	amd64	386	arm	arm64
darwin	x			x
freebsd	x	x
linux	x	x	x	x
windows	x	x

Looking at what various providers push to Terraform registry, it's the same matrix, but with one addition: freebsd_arm.
For example, here and here. Hence the suggested list of explicit ignores to align with the current state.