Add test cases to verify config schema generation for imports

[Dilhasha]

Description:
$subject

Describe your task(s)

• Verify imports with no configurable variables - shouldn't appear in config-schema.json
• If the default module imports mod2 of same package transitively, the configurables from the direct imports in that module should appear in config-schema.json
• If there's a non-default module that is not called from default module, the configurables from the direct imports in that module should not appear in config-schema.json
• The config-schema.json should not include test only dependencies
• How to deal with the provided scope?

Related Issues (optional):

Suggested Labels (optional):

Suggested Assignees (optional):