SOL003: added notes to data types main descriptions

...agement/definitions/SOL003VNFLifecycleManagement_def.yaml

.../definitions/SOL003VNFLifecycleOperationGranting_def.yaml

...anagement/definitions/SOL003VNFPackageManagement_def.yaml

...t/definitions/SOL003VNFSnapshotPackageManagement_def.yaml

src/definitions/SOL002SOL003VNFFaultManagement_def.yaml

src/definitions/SOL002SOL003VNFIndicator_def.yaml

src/definitions/SOL002SOL003VNFLifecycleManagement_def.yaml

...definitions/SOL002SOL003VNFPerformanceManagement_def.yaml