Need to incorporate a database query that returns input scenes for EVHR processing

[pahbs]

When operating on EXPLORE, the first step in this workflow should include a query for all the scenes (individual NTF files) that EVHR needs.

This query should operate with the catalog id.

Here is a module that work as a command line tool, as well as in a notebook, that returns:

1. a list of paths to each scene's NTF file
2. in an output dir returns a csv of each of the paths to each scene's NTF file
3. in an output dir returns symlinks to each NTF and XML for each scene

https://github.com/pahbs/evhr/blob/master/query_db_catid.py