Add support for spot instances

[jawnsy]

TL;DR

This module supports preemptible instances, but not spot instances

Terraform Resources

We should be able to use provisioning_model = SPOT to support spot instances: https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_instance_template#nested_scheduling

Detailed design

Add a "spot" variable in the model and set the provisioning_model here:

terraform-google-vm/modules/instance_template/main.tf

Lines 144 to 149 in dfb0523

	# scheduling must have automatic_restart be false when preemptible is true.
	scheduling {
	preemptible = var.preemptible
	automatic_restart = !var.preemptible
	on_host_maintenance = local.on_host_maintenance
	}

Additional information

No response

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[jawnsy]

I believe this is still a valid issue

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[jawnsy]

This is still a valid issue

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[jawnsy]

I think this is still an issue until #294 is merged

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[jawnsy]

This is still a valid issue