v20.2

This is a bug fix release. The following issues have been addressed:

• Don't error out when setting up the SIGWINCH handler (for console resize)
  when this fails due to older kernel (#3456)
• Seccomp rules were refined to remove syscalls that are now unused
• Fix reboot on older host kernels when SIGWINCH handler was not initialised
  (#3496)
• Fix virtio-vsock blocking issue (#3497)