Publish this module in the Terraform Registry

[displague]

In order to publish this module (https://www.terraform.io/docs/registry/modules/publish.html):

• replace "Packet" with "Equinix Metal"
• replace packet_ with metal_
• replace other Packet references (slack, websites, email, with their EM equivalent)
• Search for "packet" to find any stragglers
• create versions.tf (copy it from another project and modify it, or use terraform 0.12upgrade, 0.13upgrade, etc).. Presumably, it will look something like this in the end:

  terraform {
    required_providers {
      null = {
        source = "hashicorp/null"
      }
      metal = {
        source = "equinix/metal"
      }
      random = {
        source = "hashicorp/random"
      }
      template = {
        source = "hashicorp/template"
      }
      tls = {
        source = "hashicorp/tls"
      }
      local = {
        source = "hashicorp/local"
      }
    }
    required_version = ">= 0.13"
  }

• run terraform providers lock
• add .terraform.lock.hcl to git (might have to change the .gitignore rules)
• update to TF 0.14+
• indicate sensitive = true in variables.tf (auth_token) and output.tf (kubeadm_join_command)
• remove the circleci example test
• replace it with https://github.com/equinix/terraform-metal-anthos-on-baremetal/blob/main/.github/workflows/terraform.yml, minimally
• rename output.tf to outputs.tf (part of standard module structure)
• ^ consider renaming templates to assets
• ^ consider renaming scripts to assets/scripts
• update documentation for the new equinix/terraform-metal-kubernetes-bgp home
• terraform fmt
• terraform validate
• rename the project to terraform-metal-kubernetes-bgp (format of name is required)
• move the project to equinix/
• tag the release (git tag -a v0.1.0 -m v0.1.0 (or -s instead of -a) (semver is required)
• publish https://registry.terraform.io/github/create
• The module should be consumable without any modification of the tf files.

  # create minimal main.tf in tmpdir; add variables or hardcode settings; 
  # terraform init -upgrade; terraform apply
  module "kubernetes-bgp" {
    source  = "equinix/kubernetes-bgp/metal"
    version = "0.1.0"
    # insert the required variables here
  }

• Documentation should be updated to note how the project may be consumed as a module (consider if any other output variables should be made available)