Updated Azure Storage Driver with Latest SDK

[shizhMSFT]

Updated registry/storage/driver/azure/azure.go with the latested SDK (Azure/azure-storage-blob-go).

Resolves #3028

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/moby/moby/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "new_sdk" git@github.com:shizhMSFT/distribution.git somewhere
$ cd somewhere
$ git rebase -i HEAD~842354171776
editor opens
change each 'pick' to 'edit'
save the file and quit
$ git commit --amend -s --no-edit
$ git rebase --continue # and repeat the amend for each commit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@ae2e973). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3029   +/-   ##
=========================================
  Coverage          ?   60.73%           
=========================================
  Files             ?      102           
  Lines             ?     8073           
  Branches          ?        0           
=========================================
  Hits              ?     4903           
  Misses            ?     2518           
  Partials          ?      652

Flag	Coverage Δ
#linux	60.73% <ø> (?)

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[flavianmissi]

@shizhMSFT it looks like they're sticking with the azure-sdk-for-go pkg, see the azure-storage-blob-go repo readme:

If you would like to access our latest Go SDK, please refer to the new preview azblob package here. If you would like more information on Azure's burgeoning effort to coordinate the development of the SDKs across services, of which this change is a part, please refer to this article.

[milosgajdos]

There is a PR that updates Azure integration: #3839

[shizhMSFT]

Closing this PR as it is outdated and is succeeded by #3839