templating, minor fix and new testcases added

SOL002/VNFLifecycleManagement-API/HealVNFTask.robot

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

SOL002/VNFLifecycleManagement-API/InstantiateVNFTask.robot

SOL002/VNFLifecycleManagement-API/OperateVNFTask.robot

SOL002/VNFLifecycleManagement-API/ScaleVNFTask.robot

SOL002/VNFLifecycleManagement-API/ScaleVNFToLevelTask.robot

SOL002/VNFLifecycleManagement-API/Subscriptions.robot

SOL002/VNFLifecycleManagement-API/TerminateVNFTask.robot

SOL002/VNFLifecycleManagement-API/VNFInstances.robot

.../VNFLifecycleManagement-API/VnfLcmOperationKeywords.robot

...NFLifecycleManagement-API/VnfLcmOperationOccurences.robot

SOL002/VNFLifecycleManagement-API/environment/variables.txt

...ifecycleManagement-API/jsons/changeVnfFlavourRequest.json

...02/VNFLifecycleManagement-API/jsons/createVnfRequest.json

SOL002/VNFLifecycleManagement-API/jsons/healVnfRequest.json

...FLifecycleManagement-API/jsons/instantiateVnfRequest.json

...ifecycleManagement-API/jsons/lccnSubscriptionRequest.json

...2/VNFLifecycleManagement-API/jsons/operateVnfRequest.json

SOL002/VNFLifecycleManagement-API/jsons/scaleVnfRequest.json

...LifecycleManagement-API/jsons/scaleVnfToLevelRequest.json