feat: add variable to configure ebs optimization for runner instances (#3901)

feat: add variable to configure ebs optimization for runner instances

Author: AlexShemeshWix

Diff for: README.md

@@ -245,6 +245,7 @@ Talk to the forestkeepers in the `runners-channel` on Slack.
 | <a name="input_webhook_lambda_timeout"></a> [webhook\_lambda\_timeout](#input\_webhook\_lambda\_timeout) | Time out of the webhook lambda in seconds. | `number` | `10` | no |
 | <a name="input_webhook_lambda_zip"></a> [webhook\_lambda\_zip](#input\_webhook\_lambda\_zip) | File location of the webhook lambda zip file. | `string` | `null` | no |
 | <a name="input_workflow_job_queue_configuration"></a> [workflow\_job\_queue\_configuration](#input\_workflow\_job\_queue\_configuration) | Configuration options for workflow job queue which is only applicable if the flag enable\_workflow\_job\_events\_queue is set to true. | <pre>object({<br>    delay_seconds              = number<br>    visibility_timeout_seconds = number<br>    message_retention_seconds  = number<br>  })</pre> | <pre>{<br>  "delay_seconds": null,<br>  "message_retention_seconds": null,<br>  "visibility_timeout_seconds": null<br>}</pre> | no |
+| <a name="runners_ebs_optimized"></a> [runner\_ebs\_optimized](#input\_runner\_ebs\_optimized) | Whether the runner instances are optimized for EBS I/O. This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal EBS I/O performance. | `bool` | `false` | no |
 
 ## Outputs
 

Diff for: main.tf

@@ -288,6 +288,7 @@ module "runners" {
   pool_lambda_reserved_concurrent_executions = var.pool_lambda_reserved_concurrent_executions
 
   ssm_housekeeper = var.runners_ssm_housekeeper
+  ebs_optimized   = var.runners_ebs_optimized
 }
 
 module "runner_binaries" {

Diff for: variables.tf

@@ -884,3 +884,9 @@ variable "instance_termination_watcher" {
   })
   default = {}
 }
+
+variable "runners_ebs_optimized" {
+  description = "Enable EBS optimization for the runner instances."
+  type        = bool
+  default     = false
+}