fog/fog — pull request #762 by nirvdrum (2012-02-23 19:00:38+00:00)
Title: [aws|storage|test] Use the MD5 of the file as the ETag for put_object to match S3's behavior.

I'm not sure why the ETag was mocked originally, but it seems to make sense to continue mocking for multi-part stores. For simple put_object, the docs specify what the format of the ETag should be.

The value is a bit more important now that objects can have multiple versions. E.g., I'm trying to write a job to clean up duplicate versioned data in S3 and need the mock framework to better match S3.