* Add retry to node scheduability marking. ([#36211](https://github.com/kubernetes/kubernetes/pull/36211), [@brendandburns](https://github.com/brendandburns))
* specify custom ca file to verify the keystone server ([#35488](https://github.com/kubernetes/kubernetes/pull/35488), [@dixudx](https://github.com/dixudx))

### kubectl rolling-update: < v1.4.0 client vs >=v1.4.0 cluster

Old version kubectl's rolling-update command is compatible with Kubernetes 1.4 and higher only if you specify a new replication controller name. You will need to update to kubectl 1.4 or higher to use the rolling update command against a 1.4 cluster if you want to keep the original name, or you'll have to do two rolling updates.

- Added alpha support for field selectors on custom resources.
  Provided that the `CustomResourceFieldSelectors` feature gate is enabled, the CustomResourceDefinition
  API now lets you specify `selectableFields`. Listing a field there allows filtering custom resources for that