remove unneeded echo in shutdown_command

packer/ubuntu-k8s.pkr.hcl

@@ -31,7 +31,7 @@ locals {
   build_tool            = "HashiCorp Packer ${packer.version}"
   build_date            = formatdate("YYYY-MM-DD hh:mm ZZZ", timestamp())
   build_description     = "Kubernetes Ubuntu 20.04 Node template\nBuild date: ${local.build_date}\nBuild tool: ${local.build_tool}"
-  shutdown_command      = "echo '${var.build_password}' | sudo -S -E shutdown -P now"
+  shutdown_command      = "sudo -S -E shutdown -P now"
   iso_paths             = ["[${var.common_iso_datastore}] ${var.iso_path}/${var.iso_file}"]
   iso_checksum          = "${var.iso_checksum_type}:${var.iso_checksum_value}"
   data_source_content   = {
@@ -53,7 +53,7 @@ locals {
 //  BLOCK: source
 //  Defines the builder configuration blocks.
 
-source "vsphere-iso" "linux-ubuntu" {
+source "vsphere-iso" "ubuntu-k8s" {
 
   // vCenter Server Endpoint Settings and Credentials
   vcenter_server        = var.vsphere_endpoint
@@ -154,7 +154,7 @@ source "vsphere-iso" "linux-ubuntu" {
 
 build {
   sources = [
-    "source.vsphere-iso.linux-ubuntu"
+    "source.vsphere-iso.ubuntu-k8s"
   ]
 
   provisioner "file" {