Possibly add metadata configuration options for Glacier restoration

[JustinKyleJames]

• master
• 4-2-stable

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When an object is restored from Glacier, the number of days it will be restored and the restoration tier are configurable parameters on the S3 resource (S3_RESTORATION_DAYS and S3_RESTORATION_TIER).

It might be beneficial to have object level overrides for these in metadata. So, for example, if the resource has the tier set to "Standard" but the user needs an object restored with "Expedited" tier, the user could set the appropriate metadata on the object before attempting to retrieve the object (which will schedule the restoration).

[JustinKyleJames]

This has been implemented in the 4-2-stable branch and tested with FujiFilm.

[trel]

I don't see the commits - can we link to them? They didn't link here?

[JustinKyleJames]

I don't see the commits - can we link to them? They didn't link here?

I have not opened a pull request as I was waiting for the irods code. I can do so.