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))

* 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))

- Feature gate dependencies are now explicit, and validated at startup. A feature can no longer be enabled if it depends on a disabled feature. In particular, this means that `AllAlpha=true` will no longer work without enabling disabled-by-default beta features that are depended on (either with `AllBeta=true` or explicitly enumerating the disabled dependencies). ([#133697](https://github.com/ku...

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

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{})

    }
  }

  /**
   * Returns a {@link Converter} that converts values using {@link BiMap#get bimap.get()}, and whose
   * inverse view converts values using {@link BiMap#inverse bimap.inverse()}{@code .get()}.
   *
   * <p>To use a plain {@link Map} as a {@link Function}, see {@link
   * com.google.common.base.Functions#forMap(Map)} or {@link
   * com.google.common.base.Functions#forMap(Map, Object)}.
   *

    }
  }

  /**
   * Returns a {@link Converter} that converts values using {@link BiMap#get bimap.get()}, and whose
   * inverse view converts values using {@link BiMap#inverse bimap.inverse()}{@code .get()}.
   *
   * <p>To use a plain {@link Map} as a {@link Function}, see {@link
   * com.google.common.base.Functions#forMap(Map)} or {@link
   * com.google.common.base.Functions#forMap(Map, Object)}.
   *

* add  `kubectl replace --raw` and `kubectl delete --raw` to have parity with create and get ([#79724](https://github.com/kubernetes/kubernetes/pull/79724), [@deads2k](https://github.com/deads2k))
* E2E tests no longer add command line flags directly to the command line, test suites that want that need to be updated if they don't use HandleFlags ([#75593](https://github.com/kubernetes/kubernetes/pull/75593), [@pohly](https://github.com/pohly))

  - `servicePort` -> `service.port.number` (for numeric values)
  - `pathType` no longer has a default value in v1; "Exact", "Prefix", or "ImplementationSpecific" must be specified

  Other Ingress API updates:
  - backends can now be resource or service backends