Add s3 bucket tagging support
Add mocks in for bucket tagging and include in bucket tests
Store tag information in mock and check for set tags in `put_bucket_tagging`
Namespace tagging and move tagging tests prior to bucket deletion
Return `body` out of test so we have proper value to match against expected `returns`
Move mock storage initialization and remove storage checks
Merge pull request #2322 from chrisroberts/feature/s3-tags

Add s3 bucket tagging support