Add option to keep source image labels

[TomaszUrugOlszewski]

Description

Hello,

I build base VM image, and add commit ID of ansible code as image label. This allows me to easily tell what do I have deployed.

My problem is that when I use base image to build more images, I lost information about ansible version, and there is no way (or I'm blind) to keep it somehow.

• If we use image_family, we don't have any access to image ID
• And there is no feature to copy base image labels.

My feature request is:

• Add configuration option to copy selected labels from base image
• It would be nice to be able to add common prefix to all these labels

or (worse)

• Add configuration option to add base image ID to image labels, so we can find labels indirectly

Use Case(s)

Versioning

Potential configuration

Better, with direct access to base image labels:

image_labels_copy_source_image_labels = [
  "^ansible.*",
  "other labels",
]

Worse, with base image ID to access labels indirectly:

image_labels_add_source_image_id = true