Refactor REST warehouse raw data realm validation.

[aaronweeden]

Description

This PR refactors the validation of the realm parameter for REST requests to the warehouse raw data endpoint.

Now, instead of responding with a message of Invalid realm, the message provides more information depending on the reason for the error:

• No realm exists with the requested name.
• The requested realm is not configured to provide raw data.
• Your user account does not have permission to get raw data from the requested realm.

In the last example above, it now responds with 403 Forbidden instead of 400 Bad Request.

Tests performed

In addition to updating the expected message in an integration test, I also updated my port on xdmod-dev and made sure the following tests passed with different roles and different realms, making the following request (replacing <token> with the user's token and <realm> with the realm):

GET https://xdmod-dev.ccr.xdmod.org:9001/rest/warehouse/raw-data?realm=<realm>&start_date=2024-01-01&end_date=2024-01-01&Bearer=<token>

Top Role	Realm	Result
User	foo	No realm exists with the requested name.
User	Jobs	Success
User	Cloud	Success
User	Accounts	Success
User	Allocations	Success
User	ResourceAllocations	Your user account does not have permission to get raw data from the requested realm.
User	Requests	The requested realm is not configured to provide raw data.
User	Gateways	The requested realm is not configured to provide raw data.
User	SUPREMM	Success
User	JobEfficiency	The requested realm is not configured to provide raw data.
User	ResourceSpecifications	Success
User	Introspection	The requested realm is not configured to provide raw data.
User	PCPArchives	The requested realm is not configured to provide raw data.
User	OnDemand	The requested realm is not configured to provide raw data.
Program Officer	foo	No realm exists with the requested name.
Program Officer	Jobs	Success
Program Officer	Cloud	Success
Program Officer	Accounts	Success
Program Officer	Allocations	Success
Program Officer	ResourceAllocations	Success
Program Officer	Requests	The requested realm is not configured to provide raw data.
Program Officer	Gateways	The requested realm is not configured to provide raw data.
Program Officer	SUPREMM	Success
Program Officer	JobEfficiency	The requested realm is not configured to provide raw data.
Program Officer	ResourceSpecifications	Success
Program Officer	Introspection	The requested realm is not configured to provide raw data.
Program Officer	PCPArchives	The requested realm is not configured to provide raw data.
Program Officer	OnDemand	The requested realm is not configured to provide raw data.

Checklist:

• The pull request description is suitable for a Changelog entry
• The milestone is set correctly on the pull request
• The appropriate labels have been added to the pull request

[ryanrath]

Just the one note re: adding a test that exercises the new AccessDeniedException path in validateRawDataParams.