* Add name validation for dynamic client methods in client-go ([#75072](https://github.com/kubernetes/kubernetes/pull/75072), [@lblackstone](https://github.com/lblackstone))
* Fix issue in Portworx volume driver causing controller manager to crash ([#76341](https://github.com/kubernetes/kubernetes/pull/76341), [@harsh-px](https://github.com/harsh-px))

#### Docker runtime Known Issues

- Kernel crash with Aufs storage driver on Debian Jessie ([#27885](https://github.com/kubernetes/kubernetes/issues/27885))

### Promoted CRD Validation Expression Language to Beta

pkg database/sql/driver, type ColumnConverter //deprecated
pkg database/sql/driver, type Conn interface, Begin //deprecated
pkg database/sql/driver, type Execer //deprecated
pkg database/sql/driver, type Queryer //deprecated
pkg database/sql/driver, type Stmt interface, Exec //deprecated
pkg database/sql/driver, type Stmt interface, Query //deprecated

                this.treeHandle.ensureDFSResolved();
            }

            if (this.transportContext.getConfig().isStrictResourceLifecycle()) {
                // one extra share to keep the tree alive
                return this.treeHandle.acquire();
            }
            return this.treeHandle;

        } catch (CIFSException e) {
            // Reset handle on connection failure

* Fixed an issue where Portworx volume driver wasn't passing namespace and annotations to the Portworx Create API. ([#59607](https://github.com/kubernetes/kubernetes/pull/59607), [@harsh-px](https://github.com/harsh-px))

- Fixed migration of in-tree vSphere volumes to the CSI driver. ([#122341](https://github.com/kubernetes/kubernetes/pull/122341), [@jsafrane](https://github.com/jsafrane)) [SIG Storage]

        <field>
          <name>type</name>
          <version>4.0.0+</version>
          <defaultValue>mail</defaultValue>
          <type>String</type>
          <description>The mechanism used to deliver notifications.</description>
        </field>
        <field>
          <name>sendOnError</name>
          <version>4.0.0+</version>
          <defaultValue>true</defaultValue>
          <type>boolean</type>

* Upgrading Container-VM base image for k8s on GCE. Brief changelog as follows: ([#32738](https://github.com/kubernetes/kubernetes/pull/32738), [@Amey-D](https://github.com/Amey-D))
    * Fixed performance regression in veth device driver
    * Docker and related binaries are statically linked
    * Fixed the issue of systemd being oom-killable

    val connect = server.takeRequest()
    assertThat(connect.headers["Private"]).isNull()
    assertThat(connect.headers["User-Agent"]).isEqualTo(USER_AGENT)
    assertThat(connect.headers["Proxy-Connection"]).isEqualTo("Keep-Alive")
    assertThat(connect.headers["Host"]).isEqualTo("android.com:443")
    val get = server.takeRequest()
    assertThat(get.headers["Private"]).isEqualTo("Secret")