[OpenAPI][Issue#41] NS Lifecycle Management Test Schemas may need alignment

OpenAPI Background: Commit e646358 (2025-07-11) proposed schema definition fix in NS Lifecycle Mgmt. See NSLifecycleManagement/definitions/SOL005NSLifecycleManagement_def.yaml for details.

API-Tests Impact NS Lifecycle Management test schemas may need alignment (e.g. https://forge.etsi.org/rep/nfv/api-tests/-/blob/5.1.1/SOL005/NSLifecycleManagement-API/schemas/NsInstance.schema.json?ref_type=tags#L476)