Merge pull request #9377 from travisn/reset-release-notes

docs: Reset the pending release notes for 1.9

PendingReleaseNotes.md

@@ -1,29 +1,6 @@
-# Major Themes
-
-v1.8...
-
-## K8s Version Support
-
-## Upgrade Guides
+# v1.9 Pending Release Notes
 
 ## Breaking Changes
 
-- Flex driver is fully deprecated. If you are still using flex volumes, before upgrading to v1.8
-  you will need to convert them to csi volumes. See the flex conversion tool.
-- Min supported version of K8s is now 1.16. If running on an older version of K8s it is recommended
-  to update to a newer version before updating to Rook v1.8.
-- Directory structure of the YAML examples has changed. Files are now in `deploy/examples` and subdirectories.
-
-### Ceph
 
 ## Features
-
-- The Rook Operator does not use "tini" as an init process. Instead, it uses the "rook" and handles
-  signals on its own.
-- Rook adds a finalizer `ceph.rook.io/disaster-protection` to resources critical to the Ceph cluster
-  (rook-ceph-mon secrets and configmap) so that the resources will not be accidentally deleted.
-- Add support for [Kubernetes Authentication when using HashiCorp Vault Key Management Service](Documentation/ceph-kms.md##kubernetes-based-authentication).
-- Bucket notification supported via CRDs
-- The failure domain of a pool can be changed on the CephBlockPool instead of requiring toolbox commands
-- The Rook Operator and the toolbox now run under the "rook" user and does not use "root" anymore.
-- The Operator image now includes the `s5cmd` binary to interact with S3 gateways.