TPT-4487: Add quota_type and has_usage attributes to object storage quota data sources

[zliang-akamai]

📝 Description

Add quota_type and has_usage attributes to Object Storage quota data sources

✔️ How to Test

make test-int PKG_NAME=objquota

make test-int PKG_NAME=objquotas

[Copilot]

Pull request overview

This PR extends the Object Storage quota data sources (single quota and quota list) to expose the API’s quota_type and has_usage fields, and updates the single-quota data source to only request usage data when the quota reports usage is available. It also updates integration tests and documentation to cover the new attributes and the quota_usage = null behavior when has_usage is false.

Changes:

• Add quota_type and has_usage attributes to both linode_object_storage_quota and linode_object_storage_quotas.
• Avoid calling the quota-usage API when has_usage is false, and set quota_usage to null in that case.
• Update acceptance tests and docs to validate/describe the new attributes and behavior.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
linode/objquotas/framework_model.go	Adds quota_type and has_usage to the list model and flattens them from the API response.
linode/objquotas/framework_datasource_schema.go	Exposes quota_type / has_usage in schema and allows filtering on them.
linode/objquotas/datasource_test.go	Extends list data source acceptance test to assert the new fields exist.
linode/objquota/framework_models.go	Adds quota_type / has_usage to the single-quota model and nulls quota_usage when usage isn’t available.
linode/objquota/framework_datasource.go	Conditionally fetches usage only when quota.HasUsage is true; improves diagnostic messages.
linode/objquota/framework_datasource_schema.go	Exposes quota_type / has_usage in the single-quota data source schema.
linode/objquota/datasource_test.go	Makes the single-quota acceptance test resilient when no quotas have usage; asserts new fields and conditional quota_usage.
docs/data-sources/object_storage_quotas.md	Documents new exported attributes and filterable fields for the list data source.
docs/data-sources/object_storage_quota.md	Documents new attributes and clarifies quota_usage is null when has_usage is false.

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