* Download patches version automatically from a minor

* Automate versions discovery for hash download

* Small refactoring

The old version of the script downloaded all binaries and generated file checksums locally.
This was a slow process since all binaries of all architectures needed to be downloaded.
The new version simply downloads the .sha256 files containing the binary checksum in text
form which saves a lot of traffic and time.

Signed-off-by: tu1h <lihai.tu@daocloud.io>

* Decouple role kubespray-defaults from download

Avoids doing re-importing the download role on every invocation of
kubespray-defaults (and skipping everything).

This has a measurable effect on playbook performance.

* Update docs refering to moved download defaults

The following applications have been upgraded:

* Cilium
* Helm
* crun
* Katacontainers
* youki
* gvisor
* skopeo
* yq

Signed-off-by: Victor Morales <chipahuac@hotmail.com>

* Added ppc64le support

* Fixed linting errors

The main functions are wrapped by a sys.exit function which expects and
argument. The curent implementation isn't returning values in all cases.
This change ensures main functions return a value in all cases.

- Directly update the main.yml file with the new hashes.