hancements/issues/554) feature was also moved to beta. This enables a volume plugin to specify the maximum number of a given volume type per node as a function of the node characteristics (for example, a larger limit for larger nodes, a smaller limit for smaller nodes).

SIG Storage also worked on a number of [Container Storage Interface (CSI) features](https://github.com/kubernetes/enhancements/issues/178) this quarter in anticipation of moving support for CSI from beta to GA in the...

- Dynamic Resource Allocation (DRA): fixed some small, unlikely race condition during pod scheduling. ([#124595](https://github.com/kubernetes/kubernetes/pull/124595), [@pohly](https://github.com/pohly)) [SIG Node, Scheduling and Testing]

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- Added Pressure Stall Information (PSI) metrics to node metrics. ([#130701](https://github.com/kubernetes/kubernetes/pull/130701), [@roycaihw](https://github.com/roycaihw)) [SIG Node and Testing]

- Fix scoring for `NodeResourcesMostAllocated` and `NodeResourcesBalancedAllocation` plugins when nodes have containers with no requests. This was leaving to under-utilization of small nodes. ([#102925](https://github.com/kubernetes/kubernetes/pull/102925), [@alculquicondor](https://github.com/alculquicondor))

  leave unused rules in iptables for a while (up to `--iptables-sync-period`)
  before deleting them. This improves performance by not requiring it to
  check for stale rules on every sync. (In smaller clusters, it will still
  remove unused rules immediately once they are no longer used.)

  (The threshold for "large" used here is currently "1000 endpoints" but

- Refactored `test/e2e/framework` so that the core framework is smaller. Optional functionality like resource monitoring, log size monitoring, metrics gathering and debug information dumping must be imported by specific e2e test suites. Init packages are provided which can be imported to re-enable the functionality that...

### SIG Network

For 1.13, the areas of focus were in IPv6, DNS improvements and some smaller items:
CoreDNS is now the default cluster DNS passing all of the scale/resource usage tests

* Update CSI spec dependency to point to v0.1.0 tag ([#57989](https://github.com/kubernetes/kubernetes/pull/57989), [@NickrenREN](https://github.com/NickrenREN))
* Update kube-dns to Version 1.14.8 that includes only small changes to how Prometheus metrics are collected. ([#57918](https://github.com/kubernetes/kubernetes/pull/57918), [@rramkumar1](https://github.com/rramkumar1))

* Re-enabled nodeipam controller for external clouds. Re-enables nodeipam controller for external clouds. Also does a small refactor so that we don't need to pass in allocateNodeCidr into the controller.
 ([#63049](https://github.com/kubernetes/kubernetes/pull/63049), [@andrewsykim](https://github.com/andrewsykim))