[GA] Bring over Terraform docs from Cloud

docs/guides/ga-set-up-terraform.mdx

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+---
+
+title: Set up Terraform for Qiskit Runtime
+
+description: How to set up Terraform for Qiskit Runtime if you use Terraform to manage your infrastructure.
+
+copyright:
+  years: 2022, 2023
+lastupdated: "2022-03-28"
+
+keywords: quantum, Qiskit, runtime, near time compute, terraform
+
+subcollection: quantum-computing
+
+content-type: howto
+
+---
+
+{{site.data.keyword.attribute-definition-list}}
+
+
+# Set up Terraform for Qiskit Runtime
+{: #setup-terraform}
+
+If you use Terraform to manage your infrastructure, the [IBM Cloud provider for Terraform](/docs/ibm-cloud-provider-for-terraform?topic=ibm-cloud-provider-for-terraform-getting-started){: external} supports provisioning Qiskit Runtime service instances. The generic “ibm_resource_instance” resource is used for that. The following parameters have to be specified:
+{: shortdesc}
+
+## Provisioning with Terraform
+{: #Provisioning-with-Terraform}
+
+If you use Terraform to manage your infrastructure, the [IBM Cloud provider for Terraform](/docs/ibm-cloud-provider-for-terraform?topic=ibm-cloud-provider-for-terraform-getting-started){: external} supports provisioning Qiskit Runtime service instances. The generic “ibm_resource_instance” resource is used for that. The following parameters have to be specified:
+
+-	`name` – The name of your service instance.
+-	`service` – Specify `quantum-computing` to provision Qiskit Runtime instances.
+-	`plan` – Can be `lite` or `paygo-standard`.
+-	`location` – Currently, this must be `us-east`.
+
+Optional parameters include:
+
+-	`resource_group_id` – Creates the service instance in the specified resource group.
+-	`tags` – Add tags to the resource.
+
+
+## Example: Creating a Service Instance of Qiskit Runtime
+{: #example}
+
+After the job completes, you can view the results.
+
+1. In your Terraform configuration file, add the following code:
+
+   ```terraform
+   resource "ibm_resource_instance" "my-instance" {
+             name = "my-instance-name"
+             service = "quantum-computing"
+             plan = "lite"
+             location = "us-east"
+   }
+   ```
+   {: codeblock}
+
+   Change the name of the service instance (parameter “name”) and the plan (parameter “plan”) according to your requirements.
+2. Create a Terraform execution plan. 
+
+   ```terraform
+   terraform plan
+   ```
+   {: codeblock}
+
+3. Remove the namespace and re-create it with a new name. Note that this process might take a few minutes to complete.
+
+   ```terraform
+   terraform apply
+   ```
+   {: codeblock}
+
+4. Verify on the [Instances page](https://cloud.ibm.com/quantum/instances){: external} that your service instance has been created.
+
+Qiskit Runtime service instances are IAM managed resources. Access can be shaped through terraform using IAM user policies. See [ibm_iam_user_policy](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/iam_user_policy){: external} for more details and examples.