0.5.0

This release mainly focused on continuing the alignment of Lighthouse's service discovery support with the [Kubernetes Multicluster
Services KEP][MCS KEP].

• Lighthouse has been modified per the [Kubernetes Multicluster Services KEP][MCS KEP] as follows:
• The MultiClusterService resource has been replaced by ServiceImport.
• The ServiceExport resource is now updated with status information as lifecycle events occur.
• Lighthouse now allows a ServiceExport resource to be created prior to the associated Service.
• Network discovery was moved from subctl to the Submariner operator.
• Several new commands were added to subctl: export service, show versions, show connections, show networks, show endpoints, and show gateways.
• The subctl info command has been removed in lieu of the new show networks command.
• The Globalnet configuration has been moved from the broker-info.subm file to a ConfigMap resource stored on the
  broker cluster. Therefore, the new subctl cannot be used on brownfield Globalnet deployments where this information
  was stored as part of broker-info.subm.
• subctl now supports joining multiple clusters in parallel without having to explicitly specify the globalnet-cidr for the
  cluster to work around this issue. The globalnet-cidr will automatically be allocated by subctl for each cluster.
• The separate --operator-image parameter has been removed from subctl join and the --repository and --version
  parameters are now used for all images.
• The Submariner operator status now includes Gateway information.
• Closed technical requirements for Submariner to become a CNFC project, including Developer Certificate of Origin compliance,
  and source code linting.