- Filter published OpenAPI schema by making nullable, required fields non-required in order to avoid kubectl to wrongly reject null values. ([#85722](https://github.com/kubernetes/kubernetes/pull/85722), [@sttts](https://github.com/sttts))

Kubernetes 1.15 consists of **25 enhancements**: 2 moving to stable, 13 in beta, and 10 in alpha. The main themes of this release are:

#### Continuous Improvement

### Feature

- A `system-cluster-critical` pod should not get a low OOM Score. 
  

melalui
terlalu
lama
lamanya
selama
selama
selamanya
lebih
terlebih
bermacam
macam
semacam
maka
makanya
makin
malah
malahan
mampu
mampukah
mana
manakala
manalagi
masih
masihkah
semasih
masing
mau
maupun
semaunya
memang
mereka
merekalah
meski
meskipun
semula
mungkin
mungkinkah
nah
namun
nanti

Shinsuke Sugaya <******@****.***> 1690423667 +0900

   * java.util.TreeMap}).
   *
   * <p>Each method invocation on the set returned by this method results in exactly one method
   * invocation on the backing map or its {@code keySet} view, with one exception. The {@code
   * addAll} method is implemented as a sequence of {@code put} invocations on the backing map.
   *
   * <p>The specified map must be empty at the time this method is invoked, and should not be

Shinsuke Sugaya <******@****.***> 1690423667 +0900

* Skip multi-zone e2e tests unless provider is GCE, GKE or AWS ([#27871](https://github.com/kubernetes/kubernetes/pull/27871), [@lukaszo](https://github.com/lukaszo))
* Making DHCP_OPTION_SET_ID creation optional ([#27278](https://github.com/kubernetes/kubernetes/pull/27278), [@activars](https://github.com/activars))

}

// Replacer replacer interface like strings.Replacer
type Replacer interface {
	Replace(name string) string
}

var _ Namer = (*NamingStrategy)(nil)

// NamingStrategy tables, columns naming strategy
type NamingStrategy struct {
	TablePrefix         string
	SingularTable       bool
	NameReplacer        Replacer
	NoLowerCase         bool
	IdentifierMaxLength int
}

- Port mapping now allows the same `containerPort` of different containers to different `hostPort` without naming the mapping explicitly. ([#94494](https://github.com/kubernetes/kubernetes/pull/94494), [@SergeyKanzhelev](https://github.com/SergeyKanzhelev))