Refactoring directories. Fix on the robot files

SOL002/VNFConfiguration-API/Configuration.robot

SOL002/VNFConfiguration-API/environment/variables.txt

SOL002/VNFFaultManagement-API/Alarms.robot

...NFFaultManagement-API/EscalatePerceivedSeverityTask.robot

SOL002/VNFFaultManagement-API/IndividualAlarm.robot

SOL002/VNFFaultManagement-API/IndividualSubscription.robot

SOL002/VNFFaultManagement-API/NotificationEndpoint.robot

SOL002/VNFFaultManagement-API/Subscriptions.robot

SOL002/VNFFaultManagement-API/environment/variables.txt

...FIndicatorNotification-API/VnfIndicatorNotification.robot

...02/VNFIndicatorNotification-API/environment/variables.txt

SOL002/VNFLifecycleManagement-API/CancelOperationTask.robot

...cleManagement-API/ChangeExternalVNFConnectivityTask.robot

SOL002/VNFLifecycleManagement-API/ChangeVNFFlavourTask.robot

SOL002/VNFLifecycleManagement-API/FailOperationTask.robot

SOL002/VNFLifecycleManagement-API/HealVNFTask.robot

...2/VNFLifecycleManagement-API/IndividualSubscription.robot

...02/VNFLifecycleManagement-API/IndividualVNFInstance.robot

...leManagement-API/IndividualVnfLcmOperationOccurence.robot

SOL002/VNFLifecycleManagement-API/InstantiateVNFTask.robot