Symbolize keys so we don't break Paperclip on Ruby 2.6

[Temikus]

Fixes #535

[icco]

All of our tests are failing, but the code looks good.

[Temikus]

Nah this is not working in 2.7, need to rewrite:

Minitest::UnexpectedError:         SyntaxError: /runner/_work/fog-google/fog-google/lib/fog/storage/google_json/requests/get_object.rb:39: syntax error, unexpected '.', expecting ')'
        ...                     **options.transform_keys(&:to_sym), &_b...

[github-actions]

This pr has been marked inactive and will be closed if no further activity occurs.