feat(terraform): load completion from bash

Closes #11328
Closes #11330

plugins/terraform/terraform.plugin.zsh

@@ -16,3 +16,8 @@ alias tfi='terraform init'
 alias tfo='terraform output'
 alias tfp='terraform plan'
 alias tfv='terraform validate'
+
+if (( $+commands[terraform] )); then
+  autoload -U +X bashcompinit && bashcompinit
+  complete -o nospace -C terraform terraform
+fi