virtainer-guest-agent 0.2.0

First public release.

• A QEMU Guest Agent compatible agent for x86_64 Linux guests on Cloud
  Hypervisor, serving the host over vsock port 100 (host connections only).
  Implements the Linux commands of QEMU 11.1's QGA schema except
  guest-suspend-*: session, file system freeze/thaw/trim, host name, OS info,
  time zone, users, network, disks and file systems, guest-exec, guest files,
  accounts and SSH keys, vCPU and memory-block hotplug, and load and
  disk statistics.
• Up to 16 concurrent QGA connections, instead of qemu-ga's one.
• __io.virtainer_shell: an interactive login shell on a pseudo-terminal over
  the same connection, with resize and exit status (up to 8 sessions).
• Hot-added vCPUs and memory blocks are onlined by the agent.
• Auto-thaw watchdog for frozen file systems (freeze-timeout).
• guest-set-time works without hwclock, and with an explicit time without
  an RTC.
• Optional /etc/virtainer-guest-agent.conf with block-rpcs, allow-rpcs,
  fsfreeze-hook and freeze-timeout.
• install / uninstall for systemd and OpenRC guests; the agent ISO
  (tools/build-iso.sh) plus a cloud-init boothook installs and upgrades it.
• licenses prints the third-party notices and licence texts bundled in the
  binary.

Assets

• virtainer-guest-agent-0.2.0-x86_64-linux: the static binary.
• virtainer-guest-agent-0.2.0.iso: the read-only agent drive (label VIRTGA) for the
  ISO + boothook delivery described in the README.
• SHA256SUMS: verify with sha256sum -c SHA256SUMS before you give either to a guest;
  the agent runs as root.