- `kubectl apply` now coerces `null` values for labels and annotations in manifests to empty string values, 
consistent with typed JSON metadata decoding, rather than dropping all labels and annotations ([#129257](https://github.com/kubernetes/kubernetes/pull/129257), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]

### Feature

* Make watch cache treat resourceVersion consistent with uncached watch ([#24008](https://github.com/kubernetes/kubernetes/pull/24008), [@liggitt](https://github.com/liggitt))

### Other notable changes

  }

  @AfterEach
  fun tearDown() {
    ResponseCache.setDefault(null)
    if (this::cache.isInitialized) {
      cache.delete()
    }
  }

  /**
   * Test that response caching is consistent with the RI and the spec.
   * http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.4
   */
  @Test
  fun responseCachingByResponseCode() {

- The `export` query parameter (inconsistently supported by API resources and deprecated in v1.14) is fully removed.  Requests setting this query parameter will now receive a 400 status response. ([#98312](https://github.com/kubernetes/kubernetes/pull/98312), [@deads2k](https://github.com/deads2k))...

### Feature

	c.Assert(createdBucket.Name != "", true)

	// Parse the bucket modtime
	creationTime, err := time.Parse(iso8601TimeFormat, createdBucket.CreationDate)
	c.Assert(err, nil)

	// Check if bucket modtime is consistent (not less than current time and not late more than 5 minutes)
	timeNow := time.Now().UTC()
	c.Assert(creationTime.Before(timeNow), true)
	c.Assert(timeNow.Sub(creationTime) < time.Minute*5, true)
}

- Writes to the ServiceCIDR main resource now ignore status field changes in the request, consistent with all other Kubernetes APIs.

	([docs](http://kubernetes.io/docs/user-guide/federation/federated-replicasets.md))
	([kubernetes/features#46](https://github.com/kubernetes/enhancements/issues/46))
  - [beta] `Federated Secrets` are created and kept consistent across all clusters in a federation.
    ([docs](http://kubernetes.io/docs/user-guide/federation/federated-secrets.md))
    ([kubernetes/features#68](https://github.com/kubernetes/enhancements/issues/68))

          <description>The subprojects (formerly called modules) to build as a part of this
            project. Each subproject listed is a relative path to the directory containing the subproject.
            To be consistent with the way default URLs are calculated from parent, it is recommended
            to have subproject names match artifact ids.</description>
          <association>
            <type>String</type>

- Added the `WatchList` method to the `rest client` in `client-go`. When used,
  it establishes a stream to obtain a consistent snapshot of data from the server.
  This method is meant to be used by the generated client. ([#122657](https://github.com/kubernetes/kubernetes/pull/122657), [@p0lyn0mial](https://github.com/p0lyn0mial)) [SIG API Machinery]