v0.4.0

• Identify Kubelet nodes via MachineID instead of SystemUUID (action required) (#96)
  • Host SystemUUID and MachineID are identical on most platforms, but not on Azure or bare-metal
  • Kubelet detected SystemUUID via sysfs, but MachineID requires Kubelet
    be able to read /etc/machine-id from the host (ro mount when Kubelet
    run as a container) (action required)
  • Add support for Azure and bare-metal plaforms by changing to MachineID
• Reset fleet_lock_state gauge on first lock or unlock call (#71)
• Improve reject reply when a client attempts to unlock a lock it doesn't own (#71)