Internal: Handle release retries by not re-uploading artifact

[timotheeguerin]

fix #1689
This will try the following:

• Upload the file to blob
• If it fails because blob already exists compare the md5 of the blob with the local file
• If this is the same just pass as the file is already up to date on the blob
• If the file is different throw an error and fail the release(File shouldn't be there or release has wrong version)

[codecov]

Codecov Report

Merging #1694 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1694   +/-   ##
=======================================
  Coverage   57.11%   57.11%           
=======================================
  Files         923      923           
  Lines       24920    24920           
  Branches     4529     4529           
=======================================
  Hits        14232    14232           
  Misses      10657    10657           
  Partials       31       31

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