Description

Add an import script that will enable users to migrate all of their resources to be managed by terraform. The script will read from existing resources (by listing all orgs, deployments, clusters, etc) and then correctly import them into terraform.

How the script works:

Parses all the resources to be imported (which are passed in as args)
For each type of resource (eg. Workspace, Cluster, Deployment etc), it gets all the entity ids
For each entity id, it generates a Terraform import block in the form of:
```
import {
id = "%v"
to = astro_resource.resource_%v
}
```
After generating all the import blocks, it concatenates all the outputs and writes it to a file, import.tf
Once the import blocks are written, it then generates the Terraform HCL configuration using terraform plan -generate-config-out=generated.tf, writing all Terraform resource configs to a file, generated.tf
Lastly, the script auto approves and runs terraform apply on the new resources, successfully importing all resources!

Example import.tf file:

terraform {
    required_providers {
        astro = {
            source = "registry.terraform.io/astronomer/astro"
        }
    }
}

provider "astro" {
    organization_id = "clx42kkcm01fo01o06agtmshg"
    host = "https://api.astronomer-dev.io"
}

import {
    id = "clzlybvvw00kv01j6o0fq77ep"
    to = astro_workspace.workspace_clzlybvvw00kv01j6o0fq77ep
}

import {
    id = "clx42trhg01go01o07e0dozht"
    to = astro_cluster.cluster_clx42trhg01go01o07e0dozht
}

import {
    id = "clx42ugkb01gq01od03k7c49a"
    to = astro_cluster.cluster_clx42ugkb01gq01od03k7c49a
}

import {
    id = "clzawipbm00bm01qw98vzzoca"
    to = astro_user_roles.user_clzawipbm00bm01qw98vzzoca
}

Example generated.tf file:

resource "astro_workspace" "workspace_clzlm6cev00ki01lyvqyyoaal" {
  cicd_enforced_default = false
  description           = "Created by Terraform Acceptance Test - should self-cleanup but can delete manually if needed after 2 hours."
  name                  = "TFAcceptanceTest_QPROZQXNVZ_workspace"
}

# __generated__ by Terraform from "clx42trhg01go01o07e0dozht"
resource "astro_cluster" "cluster_clx42trhg01go01o07e0dozht" {
  cloud_provider        = "AWS"
  name                  = "Terraform_AWS_Cluster_DND"
  pod_subnet_range      = null
  region                = "us-east-1"
  service_peering_range = null
  service_subnet_range  = null
  timeouts              = null
  type                  = "DEDICATED"
  vpc_subnet_range      = "172.20.0.0/20"
  workspace_ids         = []
}

# __generated__ by Terraform from "cl7qqe4tf264442d28fttoe7g8"
resource "astro_user_roles" "user_cl7qqe4tf264442d28fttoe7g8" {
  deployment_roles  = null
  organization_role = "ORGANIZATION_OWNER"
  user_id           = "cl7qqe4tf264442d28fttoe7g8"
  workspace_roles   = null
}