Support 'unpack' when initial_content_binary is an archive file

[grenzr]

Hi all, we have an s3 input as follows:

- name: bbl-state
  type: s3
  source:
    <<: *minio-s3
    bucket: bosh-state-files
    regexp: bbl-state-(.*).tgz
    initial_path: /bbl-state-0.0.0.tgz
    initial_content_binary: ((bbl-state-init-tgz))

And when the resource is used we do so as follows:

    - get: bbl-state
      params:
        unpack: true

However, I have just noticed that the first execution does not unpack the initial_content_binary. As I can see in the code, it attempts to extract before placing the initial binary.

Would you accept a PR to resolve this, or was this by design for some reason?

[vito]

Probably an oversight, PR welcome! Definitely seems like it should unpack since the initial content is meant to simulate an initial version.

[grenzr]

Thanks @vito I'm working on it now .. PR on the way soon.