How can I check the status of a async blob copy?
The az storage blob copy cancel appears to be the only blob command to take a --copy-id as returned from a az storage blob copy start command.
I would like to be able to get some sense of progress on the copy operation.

A nice bonus would be being able to optionally block/wait on the copy operation.

Update by @troydai on 8/29/2017

Requested features:

1. Wait on blob copy operation. [https://github.com/Add wait/no-wait support to Commands #1528]
2. Get copy operation status.