Fix previous PR and fix AWS4 signing for md5 checks#116

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laxdog wants to merge 2 commits intotimkay:masterfrom

Commits on Jun 20, 2019

This is actually not required, I misunderstood how it was working. We just need to use --fail
laxdog
committed
Remove Content-MD5: from headers we don't actually need this anymore, we get the ETag for free from AWS. Also it breaks v4 signing.
laxdog
committed