SOL002: Fix in notification interfaces and errors referenced schemas

src/SOL002/VNFConfiguration/VNFConfiguration.yaml

src/SOL002/VNFFaultManagement/VNFFaultManagement.yaml

...anagementNotification/VNFFaultManagementNotification.yaml

src/SOL002/VNFIndicator/VNFIndicator.yaml

...02/VNFIndicatorNotification/VNFIndicatorNotification.yaml

...SOL002/VNFLifecycleManagement/VNFLifecycleManagement.yaml

...ementNotification/VNFLifecycleManagementNotification.yaml

...02/VNFPerformanceManagement/VNFPerformanceManagement.yaml

...entNotification/VNFPerformanceManagementNotification.yaml