* Run l7 controller on master  ([#26048](https://github.com/kubernetes/kubernetes/pull/26048), [@bprashanth](https://github.com/bprashanth))
* AWS: ELB proxy protocol support via annotation service.beta.kubernetes.io/aws-load-balancer-proxy-protocol ([#24569](https://github.com/kubernetes/kubernetes/pull/24569), [@williamsandrew](https://github.com/williamsandrew))

kube-apiserver (instead of --etcd-config):
     * --etcd-certfile, --etcd-keyfile (if using client cert auth)
     * --etcd-cafile (if not using system roots)
  * As part of preparation in 1.2 for adding support for protocol buffers (and the
direct YAML support in the API available today), the Content-Type and Accept
headers are now properly handled as per the HTTP spec.  As a consequence, if

- AWS ELB health checks will now use HTTPS/SSL protocol for HTTPS/SSL backends. ([#70309](https://github.com/kubernetes/kubernetes/pull/70309), [@2rs2ts](https://github.com/2rs2ts))

### Azure

- Promoted to conformance a test that verified that `Services` only forward traffic on the port and protocol specified. ([#120069](https://github.com/kubernetes/kubernetes/pull/120069), [@aojea](https://github.com/aojea))

  * Avoid spurious ELB listener recreation - ignore case when matching protocol ([#47391](https://github.com/kubernetes/kubernetes/pull/47391), [@justinsb](https://github.com/justinsb))