Expose AWS Region to HDF5IO

[CodyCBakerPhD]

fix #1039

Motivation

Shows the two points of exposure required to fix this. Would be great if someone could take this PR over and properly expose it as an argument (not sure how tests should handle beyond just making sure it can pass it down...)

Also not sure why the h5py.File is instantiated twice

Checklist

• Did you update CHANGELOG.md with your changes?
• Does the PR clearly describe the problem and the solution?
• Have you reviewed our Contributing Guide?
• Does the PR use "Fix #XXX" notation to tell GitHub to close the relevant issue numbered XXX when the PR is merged?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.86%. Comparing base (6a0f9d8) to head (fb6819e).
Report is 33 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1040      +/-   ##
==========================================
+ Coverage   88.72%   88.86%   +0.14%     
==========================================
  Files          45       45              
  Lines        9766     9774       +8     
  Branches     2773     2776       +3     
==========================================
+ Hits         8665     8686      +21     
+ Misses        779      774       -5     
+ Partials      322      314       -8     

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[CodyCBakerPhD]

@oruebel Needed this PR (and probably a follow-up on PyNWB) for NWB Benchmarks

@rly @mavaylon1 I added a basic test but remaining lines of coverage I have no clue how to evoke, leaving it to you to finish that coverage if you care about it

[mavaylon1]

I can take a look after I fly back this weekend. Ideally we want coverage. With @rly on vacation, I'll defer to @oruebel on that. But again, I'll take a look next week.

[mavaylon1]

@oruebel I think you are better suited for this PR. Can you take this one and then we talk to get me up to speed.

[oruebel]

@rly can you help finish up this PR?

[rly]

Review notes:

• HDMF-zarr tests are failing for unrelated issues.