Report filtered instance data to Export Service in JSON

How much refactoring/reusing code that was added as part of SWATCH-1970?  https://github.com/RedHatInsights/rhsm-subscriptions/pull/2953/files#diff-833f337360b4cd2bf2d15aa9b27f1c30f730be45919f54ed5927d44c308f942eR71-R72 

This card should follow what we did in SWATCH-2021, just with instance data instead of subscription data.

Implement the fetchData method for instances export in swatch-tally.

Guests should also be fetched.

The following filter parameters must be supported:

• product_id
• sla
• usage
• uom metric_id
• billing_provider
• billing_account_id
• display_name_contains
• category
• beginning

Any other parameters must be ignored.

fetchData must throw an exception for bad product_id, sla, usage, uom, billing_provider, or category. The listener must catch and report these errors with exportClient.downloadExportError with error code 400 and a message explaining what parameter(s) are bad. The error message may be limited to a single parameter.

Create a yaml json schema file in src/main/resources/subscriptions-export.yaml and generate the POJO model using jsonSchema2Pojo.

Create a yaml json schema file in src/main/resources/instances-export.yaml and generate the POJO model using jsonSchema2Pojo.

The schema must define properties necessary for the following JSON example: – See schema in SWATCH-2019 (subtask)

Implement uploadJson:

call exportClient.downloadExportUpload with JSON-formatted data

Testing:

• Attempted export with bad parameter(s) should fail with a message explaining which parameter(s) are bad.
• Attempted export for JSON should succeed (after correcting bad parameters)
• Attempted export for CSV should fail because the format is not yet implemented.