Public preview: Service Fabric managed clusters

Service Fabric managed clusters are a resource model that encapsulates the underlying resources of a cluster to reduce complexity and issues that occur when managing a cluster made up of multiple resources. Service Fabric managed clusters aim to reduce complexity by providing you with a single resource definition to create your Service Fabric clusters. Benefits of Service Fabric managed clusters include: * Complete operations such as removing a node type in a single step * Storage backed by managed disks by default * Fully managed cluster certificates - no more expired cluster certificates * Enhanced cluster safety - operations will be validated by SFRP * Simplified reliability and durability settings [Learn More about Service Fabric](https://docs.microsoft.com/en-us/azure/service-fabric/) [Learn More about this feature](https://docs.microsoft.com/en-us/azure/service-fabric/overview-managed-cluster) * Service Fabric * Features * [ Service Fabric](https://azure.microsoft.com/en-gb/products/service-fabric/)