- kubeadm: improved the `kubeadm reset` message for manual cleanups and referenced https://k8s.io/docs/reference/setup-tools/kubeadm/kubeadm-reset/. ([#129644](https://github.com/kubernetes/kubernetes/pull/129644), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

- Fixed clearing of rate-limiter for the queue of checks for cleaning stale pod disruption conditions. The bug could result in the PDB synchronization updates firing too often or the pod disruption cleanups taking too long to happen. ([#114770](https://github.com/kubernetes/kubernetes/pull/114770), [@mimowo](https://github.com/mimowo))

  - build: Update to k/repo-infra@v0.1.1 (supports go1.15.2)
  - build: Use go-runner:buster-v2.0.1 (built using go1.15.1)
  - bazel: Replace --features with Starlark build settings flag
  - hack/lib/util.sh: some bash cleanups
    
    - switched one spot to use kube::logging
    - make kube::util::find-binary return an error when it doesn't find
      anything so that hack scripts fail fast instead of with "binary not

* Bump cluster autoscaler to v0.5.4, which fixes scale down issues with pods ignoring SIGTERM. ([#45483](https://github.com/kubernetes/kubernetes/pull/45483), [@mwielgus](https://github.com/mwielgus))
* Fixes and minor cleanups to pod (anti)affinity predicate ([#45098](https://github.com/kubernetes/kubernetes/pull/45098), [@wojtek-t](https://github.com/wojtek-t))

* Apiserver proxy rewrites URL when service returns absolute path with request's host. ([#52556](https://github.com/kubernetes/kubernetes/pull/52556), [@roycaihw](https://github.com/roycaihw))
* Logging cleanups ([#54443](https://github.com/kubernetes/kubernetes/pull/54443), [@bowei](https://github.com/bowei))
        * Updates kube-dns to use client-go 3
        * Updates containers to use alpine as the base image on all platforms

- Fix clearing of rate-limiter for the queue of checks for cleaning stale pod disruption conditions. 
  The bug could result in the PDB synchronization updates firing too often or the pod disruption cleanups taking too long to happen. ([#114780](https://github.com/kubernetes/kubernetes/pull/114780), [@mimowo](https://github.com/mimowo)) [SIG Apps]