Retry logic / Auth Flag Fix / Sync Cleanup

[amartin120]

Please check below, if the PR fulfills these requirements:

• The commit message follows the guidelines.
• Tests for the changes have been added (for bug fixes / features).
• Docs have been added / updated (for bug fixes / features).

What kind of change does this PR introduce?

• adds retry logic for images
• ensures that the auth flags work for registries
• stop flushing the store at the start of each sync to take advantage of caching in situations where you need to re-run a manifest.

What is the current behavior?

• Currently if Hauler fails adding an image to the store, execution stops after 1 attempt. This can be frustrating when you're processing hundreds of images and have a network hiccup.
• Currently Hauler will not pass auth flags to a registry, forcing you to docker/cosign login prior to Hauler execution.
• Currently Hauler will completely remove its store and starts fresh for every hauler store sync. While I understand the initial intent, this will not allow for mutliple manifests, or perhaps more importantly, it forces you to start from the beginning if you need to rerun a manifest because of an unforeseen error halfway through processing.

What is the new behavior (if this is a feature change)?

• see the list of changes above.

Does this PR introduce a breaking change?

• Not that I've found yet. 👍🏻

Other information: