VNF Performance Management interface

...cleManagement/definitions/VNFLifecycleManagement_def.yaml

...03/VNFPerformanceManagement/VNFPerformanceManagement.yaml

...eManagement/definitions/VNFPerformanceManagement_def.yaml

...entNotification/VNFPerformanceManagementNotification.yaml

src/definitions/SOL002SOL003VNFLifecycleManagement_def.yaml

...definitions/SOL002SOL003VNFPerformanceManagement_def.yaml

src/definitions/SOL002SOL003_def.yaml

src/responses/SOL002SOL003_resp.yaml