- Fix filtering of server status.
- Fix resizing PVC of Cinder volume.
- Disable load balancer configuration if it is not defined in cloud config.
- Add support for node shutdown taint.

The external provider includes all of the above with the additional fixes and features:
- Fix bug to prevent allocation of existing floating IP.
- Fix Cinder authentication bug when OS_DOMAIN_NAME not specified.

  when the corresponding csi driver was installed:
  - `awsElasticBlockStore` for `ebs.csi.aws.com`
  - `azureDisk` for `disk.csi.azure.com`
  - `gcePersistentDisk` for `pd.csi.storage.googleapis.com`
  - `cinder` for `cinder.csi.openstack.org`
  - `csi`
  However it was still enforced using a limit in CSINode objects. ([#126924](https://github.com/kubernetes/kubernetes/pull/126924), [@carlory](https://github.com/carlory))

  * Dynamic Provisioning of PersistentVolumes: Kubernetes previously required all
volumes to be manually provisioned by a cluster administrator before use. With
this feature, volume plugins that support it (GCE PD, AWS EBS, and Cinder) can
automatically provision a PersistentVolume to bind to an unfulfilled
PersistentVolumeClaim.
  * Run multiple schedulers in parallel, e.g. one or more custom schedulers

  
  When adding links which point to resources within git repositories, like
  KEPs or supporting documentation, please reference a specific commit and avoid
  linking directly to the master branch. This ensures that links reference a
  specific point in time, rather than a document that may change over time.
  

* When using client or server certificate rotation, the Kubelet will no longer wait until the initial rotation succeeds or fails before starting static pods.  This makes running self-hosted masters with rotation more predictable. ([#58930](https://github.com/kubernetes/kubernetes/pull/58930), [@smarterclayton](https://github.com/smarterclayton))

  
  When adding links which point to resources within git repositories, like
  KEPs or supporting documentation, please reference a specific commit and avoid
  linking directly to the master branch. This ensures that links reference a
  specific point in time, rather than a document that may change over time.
  

* fix cinder volume dir umount issue [#24717](https://github.com/kubernetes/kubernetes/pull/24717) ([#24718](https://github.com/kubernetes/kubernetes/pull/24718), [@chengyli](https://github.com/chengyli))

pkg testing, type CoverBlock struct
pkg testing, type CoverBlock struct, Col0 uint16
pkg testing, type CoverBlock struct, Col1 uint16
pkg testing, type CoverBlock struct, Line0 uint32
pkg testing, type CoverBlock struct, Line1 uint32
pkg testing, type CoverBlock struct, Stmts uint16
pkg testing, type TB interface, Error(...interface{})
pkg testing, type TB interface, Errorf(string, ...interface{})

pkg syscall, type IPv6Mreq struct
pkg syscall, type IPv6Mreq struct, Interface uint32
pkg syscall, type IPv6Mreq struct, Multiaddr [16]uint8
pkg syscall, type Linger struct
pkg syscall, type Linger struct, Linger int32
pkg syscall, type Linger struct, Onoff int32
pkg syscall, type ProcAttr struct
pkg syscall, type ProcAttr struct, Dir string
pkg syscall, type ProcAttr struct, Env []string

conjunction with SIG Cloud Provider, is focusing on moving internal APIs that the OpenStack (and other providers) depends upon to staging to guarantee API stability. This work also included abstracting the in-tree Cinder API and refactoring code to the external Cinder provider to remove additional Cinder volume provider code.

Additional work was also done to implement an OpenStack driver for the Cluster API effort lead by SIG Cluster Lifecycle. For the external Cloud-Provider-OpenStack code, the...