Release v0.9.3

Changed

• Rename internal API group from "networking.antrea.tanzu.vmware.com" to "controlplane.antrea.tanzu.vmware.com". (#1147, @jianjuns)
  • This API is served by the Antrea Controller and consumed by Agents (directly) and antctl (through the K8s apiserver using an APIService)
  • Antrea Controller deletes the previous APIService on startup to avoid issues (e.g. with Namespace deletion)
  • During upgrade from a previous version, NetworkPolicy enforcement will be disrupted until the upgrade is complete: NetworkPolicy changes may not take effect and NetworkPolicies may not be applied to new Pods, until all components have been updated

Fixed

• Fix IPsec support which was broken after updating the base distribution to Ubuntu 20.04 for the Antrea Docker image, as this update introduced a more recent version of strongSwan. (#1184 #1191, @jianjuns)
• Fix deadlock in the NetworkPolicy implementation in the Antrea Agent: this issue could only be observed when using ClusterNetworkPolicies but was affecting the enforcement of all NetworkPolicies. (#1186, @Dyanngg @yktsubo @tnqn)
• Fix unbound variable error in "start_ovs" Bash script, which was causing the antrea-ovs container to crash if one OVS daemon stopped for any reason. (#1190, @antoninbas @alex-vmw)