### Action Required

* Disabling swagger ui by default on apiserver. Adding a flag that can enable it ([#23025](https://github.com/kubernetes/kubernetes/pull/23025), [@nikhiljindal](https://github.com/nikhiljindal))
* restore ability to run against secured etcd ([#21535](https://github.com/kubernetes/kubernetes/pull/21535), [@AdoHe](https://github.com/AdoHe))

### Other notable changes

	testBuckets := []string{
		// This bucket is used for testing ListObject operations.
		0: "test-bucket-list-object",
		// This bucket will be tested with empty directories
		1: "test-bucket-empty-dir",
		// Will not store any objects in this bucket,
		// Its to test ListObjects on an empty bucket.
		2: "empty-bucket",
		// Listing the case where the marker > last object.
		3: "test-bucket-single-object",
		// Listing uncommon delimiter.

	ANDW	$0x6006000060060, R27, R5                        // ERROR "cannot use REGTMP as source"
	STP	(R3, R4), 0x1234567(R27)                         // ERROR "REGTMP used in large offset store"
	LDP	0x1234567(R27), (R3, R4)                         // ERROR "REGTMP used in large offset load"
	STP	(R26, R27), 700(R2)                              // ERROR "cannot use REGTMP as source"

			endpoint := clnt.EndpointURL().String()
			if errInt, ok := opts.checkReadyErr.Load(endpoint); !ok {
				err = checkRemoteEndpoint(ctx, clnt.EndpointURL())
				opts.checkReadyErr.Store(endpoint, err)
			} else {
				if errInt == nil {
					err = nil
				} else {
					err, _ = errInt.(error)
				}
			}
			switch err.(type) {
			case BucketRemoteIdenticalToSource:

     * We will still use the readXxxWireFormat return values to
     * indicate how many bytes(note: readParameterWordsWireFormat
     * returns bytes read and not the number of words(but the
     * wordCount member DOES store the number of words)) we
     * actually read. Incedentally this is important to the
     * AndXServerMessageBlock class that needs to potentially
     * read in another smb's parameter words and bytes based on

			select {
			case <-ctx.Done():
				// Nobody wants it.
			case resCh <- results:
			}
		}
	}()
	return func() (metaCacheEntriesSorted, error) {
		select {
		case <-ctx.Done():
			done.Store(true)
			return metaCacheEntriesSorted{}, ctx.Err()
		case r := <-resultsDone:
			return r, resErr
		}
	}
}

// readOldGNUSparseMap reads the sparse map from the old GNU sparse format.
// The sparse map is stored in the tar header if it's small enough.
// If it's larger than four entries, then one or more extension headers are used
// to store the rest of the sparse map.
//
// The Header.Size does not reflect the size of any extended headers used.
// Thus, this function will read from the raw io.Reader to fetch extra headers.

     */
    protected static final String CREATE_TIME = "createTime";

    /**
     * Document type.
     */
    protected static final String _DOC = "_doc";

    /**
     * Fields that store timestamps.
     */
    protected static final String[] timestampFields = { LAST_MODIFIED, CREATE_TIME };

    /**
     * Hash function for generating IDs.
     */

- cloud.google.com/go/storage: v1.0.0
- dmitri.shuralyov.com/gpu/mtl: 666a987
- github.com/cespare/xxhash/v2: [v2.1.1](https://github.com/cespare/xxhash/v2/tree/v2.1.1)
- github.com/checkpoint-restore/go-criu/v4: [v4.0.2](https://github.com/checkpoint-restore/go-criu/v4/tree/v4.0.2)
- github.com/chzyer/logex: [v1.1.10](https://github.com/chzyer/logex/tree/v1.1.10)
- github.com/chzyer/readline: [2972be2](https://github.com/chzyer/readline/tree/2972be2)

false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference,\n    this.options.positionFixed\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n...