use templatefile function with template files

[codeangler]

google-cloud-vmseries-ncc-tutorial/region1.tf

Lines 97 to 106 in 51439d1

	data "template_file" "region1_bootstrap" {
	template = file("bootstrap_files/bootstrap.xml.template")
	vars = {
	fw_gw_untrust = google_compute_subnetwork.region1_untrust.gateway_address # 10.0.1.1
	fw_asn = local.fw_asn # 65001
	fw_ip_vpc1 = local.region1_fw_ip_vpc1 # 10.1.0.2
	cr_asn = local.cr_asn # 65000
	cr_peer0 = local.region1_cr_vpc1_peer0 # 10.1.0.10
	cr_peer1 = local.region1_cr_vpc1_peer1 # 10.1.0.11
	}

this may be preferable ... https://developer.hashicorp.com/terraform/language/functions/templatefile instead of "file()"

Because our deployment pipelines don't have a persistent state, the file is written each time, and the plan says that the file will change. Maybe this software won't be impacted, but using the templatefile function could help with Terraform internals.