Add download retries option

[tu1h]

What type of PR is this?
/kind feature

What this PR does / why we need it:
Add download retries option to control and enhance the stability for a single installation process whether on a online or air-gap environment

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Add download retries option `download_retries`

[k8s-ci-robot]

Hi @tu1h. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[MrFreezeex]

Thanks for the new option :D

/lgtm
/ok-to-test

[yankay]

Thanks @tu1h

[floryut]

@tu1h Thank you 👍

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: floryut, tu1h

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