Allow re-use of StructuredFile data endpoints with external filters

[smgallo]

Description

File and RDBMS DataEndpoints use various pieces of information such as (type, path, mode) or (type, config, schema) to generate a unique key that can be used so we don't instantiate multiple copies of the same resource handle. However, StructuredFile endpoints allow data to be optionally filtered through one or more external applications such as jq and awk and these filters were not taken into account when generating the unique key. At some point in the past this was addressed by assigning a key to StructuredFile endpoints using a constant string and an increasing number. Adding new StructuredFile endpoints caused tests that checked this key to fail depending on the order in which the files were processed.

This has been addressed by taking the external filters into account when generating a unique key so a StructuredFile person.json and one that calls a filter such as jq 'map({name: .organizations[].name}) | unique' person.json are treated as two distinct resources.

Ignore commit "Comment reformating and cleanup" as it updates and re-formats comments to be more in line with current XDMoD documentation conventions.

Motivation and Context

Reduce the overhead when adding new tests and parsing multiple JSON files.

Tests performed

Yes.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project as found in the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.