Requester Pays option [WIP]

[benyanke]

*Issue #41

Description of changes:
Implements Requester pays support.

• Implement hard-coded requester pays
• Test all methods extensively
• Implement config handler to enable or disable the previously hardcoded values.
• Clean up code and comments for merge

[benyanke]

Hardcoded methods are complete. Cursory testing of downloading and browsing seems to work.

Need to set up a dedicated bucket to heavily test all methods before I can implement the configuration option.

[john-aws]

Hi @benyanke, just wanted to check in with you on your intentions around this PR. Is the enhancement complete from your perspective, or were you planning more changes? Thanks for your efforts, by the way, really appreciated.

[benyanke]

My use for it at work was deprioritized due to some other projects, so I haven't had much time to work on it lately.

At this point, it's hardcoded to use requester pays. However, it shouldn't be much more work for someone to connect to the boolean checkbox to enable/disable.

Feel free to finish that piece up and merge if you'd like, otherwise I can do it when the project requiring it at work needs it.

[wparad]

@benyanke, I've since forked this repo and added RequestorPays for a lot of the requests, I don't know if everything is covered, but if the new explorer, missed one, we are planning on active maintenance: https://github.com/rhosys/aws-s3-explorer/