SASToken auth broken

[aaron-hardin]

A recent commit (dd6b852) added the Authorization policy which adds the query string for SASToken however, StorageAccountClient::prepare_request also adds it, the result is that trying to use SASToken for blob storage requests (at least) fails with AuthenticationFailed (403) response.
URL looks like: https://[account].blob.core.windows.net/[container]/[blob]?[sasToken][sasToken]

[aaron-hardin]

I should have given more context on this initially, latest release works, this issue is from the main branch.

[rylev]

Whoops! Thanks for reporting this. This is because we're in a transition period with how we're architecting the storage SDKs, and we're not really handling things properly. The StorageAccountClient::finalize_request (prepare_request was recently renamed) needs to add the authorization headers and url params to keep the clients that use the old style architecture working.

I'll submit a PR that fixes this issue.