Support folder selection in upload_to_dataset.

[tbnorth]

No description provided.

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[robkooper]

@tbnorth could you sign the CLA please.

[tcnichol]

I will begin my review and testing today.

[tcnichol]

@robkooper I tried to check this out from github pyclowder repo but not found? What am I doing wrong?

[robkooper]

@tcnichol check out https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[tcnichol]

@robkooper thanks.