release(v0.9.0-alpha.2): prepare release

This is the official v0.9.0-alpha.2 release.

Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>

CHANGELOG.md

@@ -1,3 +1,41 @@
+<a name="v0.9.0-alpha.2"></a>
+## [v0.9.0-alpha.2](https://github.com/talos-systems/talos/compare/v0.9.0-alpha.1...v0.9.0-alpha.2) (2021-02-20)
+
+### Chore
+
+* add default cron pipeline to the list of pipelines
+* run default pipeline as part of the `cron` pipeline
+
+### Docs
+
+* add link to GitHub Discussions as a support forum
+
+### Feat
+
+* u-boot 2021.01, ca-certificates update, Linux file ACLs
+* support control plane upgrades with Talos managed control plane
+* add support for extra volume mounts for control plane pods
+* add a warning to boot log if running self-hosted control plane
+* add an option to disable kube-proxy manifest
+* update Kubernetes to 1.20.4
+* add state encryption support
+
+### Fix
+
+* redirect warnings in manifest apply k8s client
+* handle case when kubelet serving certificates are issued
+* correctly escape extra args in kube-proxy manifest
+* skip empty manifest YAML sub-documents
+
+### Refactor
+
+* split kubernetes/etcd resource generation into subresources
+
+### Test
+
+* enable disk encryption key rotation test
+* update integration tests to use wrapped client for etcd APIs
+
 <a name="v0.9.0-alpha.1"></a>
 ## [v0.9.0-alpha.1](https://github.com/talos-systems/talos/compare/v0.9.0-alpha.0...v0.9.0-alpha.1) (2021-02-09)
 

website/content/docs/v0.9/Reference/cli.md

@@ -79,7 +79,7 @@ talosctl cluster create [flags]
       --arch string                             cluster architecture (default "amd64")
       --cidr string                             CIDR of the cluster network (IPv4, ULA network for IPv6 is derived in automated way) (default "10.5.0.0/24")
       --cni-bin-path strings                    search path for CNI binaries (VM only) (default [/home/user/.talos/cni/bin])
-      --cni-bundle-url string                   URL to download CNI bundle from (VM only) (default "https://github.com/talos-systems/talos/releases/download/v0.9.0-alpha.1/talosctl-cni-bundle-${ARCH}.tar.gz")
+      --cni-bundle-url string                   URL to download CNI bundle from (VM only) (default "https://github.com/talos-systems/talos/releases/download/v0.9.0-alpha.2/talosctl-cni-bundle-${ARCH}.tar.gz")
       --cni-cache-dir string                    CNI cache directory path (VM only) (default "/home/user/.talos/cni/cache")
       --cni-conf-dir string                     CNI config directory path (VM only) (default "/home/user/.talos/cni/conf.d")
       --cpus string                             the share of CPUs as fraction (each container/VM) (default "2.0")