Create all resources required to run Terraform with Deployment Manager

[sue445]

Deployment Manager doesn't currently supports Workload Identity Pool.

• https://cloud.google.com/deployment-manager/docs/configuration/supported-resource-types
• https://cloud.google.com/deployment-manager/docs/configuration/supported-gcp-types

Therefore, these are created by Terraform.

terraform-gcp-template/iam_workload_identity_pool.tf

Lines 3 to 23 in fb279e2

	resource "google_iam_workload_identity_pool" "github_actions" {
	provider = google-beta
	workload_identity_pool_id = "github-actions"
	}
	resource "google_iam_workload_identity_pool_provider" "github_actions" {
	provider = google-beta
	workload_identity_pool_id = google_iam_workload_identity_pool.github_actions.workload_identity_pool_id
	workload_identity_pool_provider_id = "github-actions"
	attribute_mapping = {
	"google.subject" = "assertion.sub"
	"attribute.repository" = "assertion.repository"
	}
	oidc {
	issuer_uri = "https://token.actions.githubusercontent.com"
	}
	}

But if possible, I would like to create these with Deployment Manager as well.