terraform: migrate to Homebrew (#23585)

Casks/terraform.rb

@@ -1,14 +0,0 @@
-cask 'terraform' do
-  version '0.7.0'
-  sha256 '4720e4b2878b3b0d3d781f68ff363707ed42fe39cb89e2e34c6c11f8e0f76b04'
-
-  # hashicorp.com/terraform was verified as official when first introduced to the cask
-  url "https://releases.hashicorp.com/terraform/#{version}/terraform_#{version}_darwin_amd64.zip"
-  appcast 'https://github.com/hashicorp/terraform/releases.atom',
-          checkpoint: '249f260a8fda094ce3d50512f8922a07a5a676e52a6a64896fa89fdcaeef84c7'
-  name 'Terraform'
-  homepage 'https://www.terraform.io/'
-  license :mpl
-
-  binary 'terraform'
-end

tap_migrations.json

@@ -22,6 +22,7 @@
   "sickbeard": "homebrew/core",
   "srclib": "homebrew/core",
   "sslmate": "homebrew/core",
+  "terraform": "homebrew/core",
   "volatility": "homebrew/core",
   "vault": "homebrew/core"
 }