- Promoted several endpointslice metrics from Alpha to Beta stability. ([#136368](https://github.com/kubernetes/kubernetes/pull/136368), [@bhope](https://github.com/bhope)) [SIG Instrumentation and Network]

  - [beta] PodDisruptionBudget has been promoted to beta, can be used to safely drain nodes while respecting application SLO's ([docs](http://kubernetes.io/docs/tasks/administer-cluster/safely-drain-node/)) ([kubernetes/features#85](https://github.com/kubernetes/enhancements/issues/85))

    val connect2 = server.takeRequest()
    assertThat(connect2.headers["Proxy-Authorization"]).isEqualTo("password")
  }

  /** Confirm that we can send authentication information without being prompted first.  */
  @Test
  fun preemptiveProxyAuthentication() {
    server.useHttps(handshakeCertificates.sslSocketFactory())
    server.enqueue(
      MockResponse
        .Builder()
        .inTunnel()

       * in that case, getProperty *will* return null.
       *
       * TODO(b/192002623): Handle that case: Either:
       *
       * - Skip non-string keys and values entirely, as proposed in the linked bug.
       *
       * - Throw ClassCastException instead of NullPointerException, as documented in the current
       *   Javadoc. (Note that we can't necessarily "just" change our call to `getProperty` to `get`

       * in that case, getProperty *will* return null.
       *
       * TODO(b/192002623): Handle that case: Either:
       *
       * - Skip non-string keys and values entirely, as proposed in the linked bug.
       *
       * - Throw ClassCastException instead of NullPointerException, as documented in the current
       *   Javadoc. (Note that we can't necessarily "just" change our call to `getProperty` to `get`

taste theirs, and the small ones choked and had to be patted on
the back.  However, it was over at last, and they sat down again
in a ring, and begged the Mouse to tell them something more.

  `You promised to tell me your history, you know,' said Alice,
`and why it is you hate--C and D,' she added in a whisper, half
afraid that it would be offended again.

  `Mine is a long and a sad tale!' said the Mouse, turning to

taste theirs, and the small ones choked and had to be patted on
the back.  However, it was over at last, and they sat down again
in a ring, and begged the Mouse to tell them something more.

  `You promised to tell me your history, you know,' said Alice,
`and why it is you hate--C and D,' she added in a whisper, half
afraid that it would be offended again.

  `Mine is a long and a sad tale!' said the Mouse, turning to