containerd 1.6.17

Welcome to the v1.6.17 release of containerd!

The seventeenth patch release for containerd 1.6 includes various updates.

* **Add network plugin metrics** ([#8018](containerd/containerd#8018))
* **Update mkdir permission on /etc/cni to 0755 instead of 0700** ([#8030](containerd/containerd#8030))
* **Export remote snapshotter label handler** ([#8054](containerd/containerd#8054))
* **Add support for default hosts.toml configuration** ([#8065](containerd/containerd#8065))

See the changelog for complete list of changes

Please try out the release binaries and report any issues at
https://github.com/containerd/containerd/issues.

* Derek McGowan
* Akihiro Suda
* Jess
* Antonio Ojea
* Kohei Tokunaga
* Phil Estes
* Wei Fu
<details><summary>11 commits</summary>
<p>

* [release/1.6] Prepare release notes for v1.6.17 ([#8080](containerd/containerd#8080))
  * [`a1aa9b900`](containerd/containerd@a1aa9b9) Prepare release notes for v1.6.17
* [1.6] Backport default registry hosts config ([#8065](containerd/containerd#8065))
  * [`1436641b8`](containerd/containerd@1436641) Support default hosts.toml configuration
  * [`87acecd04`](containerd/containerd@87acecd) Update hosts doc
* [release/1.6 backport] Export remote snapshotter label handler ([#8054](containerd/containerd#8054))
  * [`a6544ed7d`](containerd/containerd@a6544ed) Export remote snapshotter label handler
* [release/1.6] cri: mkdir /etc/cni with 0755, not 0700 ([#8030](containerd/containerd#8030))
  * [`ae02a24a3`](containerd/containerd@ae02a24) cri: mkdir /etc/cni with 0755, not 0700
* [release/1.6] add network plugin metrics ([#8018](containerd/containerd#8018))
  * [`6c6cc5ec1`](containerd/containerd@6c6cc5e) add network plugin metrics
</p>
</details>

This release has no dependency changes

Previous release can be found at [v1.6.16](https://github.com/containerd/containerd/releases/tag/v1.6.16)