Add the ability to associate an asset version with a product during upload

[phillipcurl]

The create_new_asset_version_artifact_and_test_for_upload and create_new_asset_version_artifact_and_test_for_upload methods accept an optional product_id parameter. When passed in, that was not making its way to the API. This PR updates that so that when a product_id is passed in, it:

• Associates the new asset version with the product
• If there is already a version of the asset associated with the product, it removes that version from the product and associates the newly created version with the product