feat: add images file for ubuntu 20.04 (#656)

images/ova/ubuntu-2004.yaml

@@ -0,0 +1,26 @@
+---
+download_images: true
+build_name: "ubuntu-2004"
+packer_builder_type: "vsphere" 
+guestinfo_datasource_slug: "https://raw.githubusercontent.com/vmware/cloud-init-vmware-guestinfo"
+guestinfo_datasource_ref: "v1.4.0"
+guestinfo_datasource_script: "{{guestinfo_datasource_slug}}/{{guestinfo_datasource_ref}}/install.sh"
+packer:
+  cluster: ""
+  datacenter: ""
+  datastore: ""
+  folder: ""
+  insecure_connection: "false"
+  network: ""
+  resource_pool: ""
+  template: "base-ubuntu-20.04" # change default value with your base template name
+  vsphere_guest_os_type: "other4xLinux64Guest"
+  guest_os_type: "ubuntu2004-64"
+  # goss params
+  distribution: "ubuntu"
+  distribution_version: "20.04"
+# Use following overrides to select the authentication method that can be used with base template
+# ssh_username: ""  # can be exported as environment variable 'SSH_USERNAME'
+# ssh_password: "" # can be exported as environment variable 'SSH_PASSWORD'
+# ssh_private_key_file = "" # can be exported as environment variable 'SSH_PRIVATE_KEY_FILE'
+# ssh_agent_auth: false  # is set to true, ssh_password and ssh_private_key will be ignored