- Update to version 1.21.4:
* Avoid spurious calls to update/delete validation
* Update to go1.16.7
* Fix metrics reporting for the deprecated watch path
* Update configure-helper.sh
* Update configure-helper.sh
* Update configure-helper.sh
* Fix disruptive subPath test failures
* Fix: ignore not a VMSS error for VMAS nodes in reconcileBackendPools
* feat: Provide IPv6 support for internal load balancer
* Update to using apiserver-network-proxy v1.22
* Make CSR cleaner tolerate objects with invalid status.certificate
* disable aufs module
* Update pd csi driver images to use v1 images (CSINode, CSIDriver, etc)
* storage e2e: patch in RBAC rules for secrets
* storage e2e: downgrade hostpath driver
* storage e2e: disable health check containers
* storage e2e: automate hostpath YAML updates, hostpath v1.6.2
* update comments and owners file for pkg/util/removeall
* kubelet: do not call RemoveAll on volumes directory for orphaned pods
* Fix panic in master upgrade tests
* Update CHANGELOG/CHANGELOG-1.21.md for v1.21.3
* Updated to use konnectivity client v0.0.21, and implemented placeholder context
* Fix the code is leaking the defaulting between unrelated pod instances
* Simplify use of the fake dynamic client
* fix: return empty VMAS name if using standalone VM
* wait for endpoints to be available
* Remove extra zone test
* Fix frameworkImpl.extenders being not set
* fix: Refresh VM cache when node is not found