Automatic merge from submit-queue (batch tested with PRs 53454, 53446, 52935, 53443, 52917). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
kubelet: add latency metrics to network plugin manager
This PR adds latency metrics to the network plugin operations, namely `GetPodNetworkStatus()`, `SetUpPod()`, and `TearDownPod()`.
I recently had to debug and issue where a PLEG relist hang was occurring due to a hang in a CNI plugin and it would have been really nice to have these. Between the these new metrics and `docker_operations_latency_microseconds`, we will be able to account for nearly all the time consuming routines in the PLEG relist.
@derekwaynecarr @smarterclayton @eparis @vishh
```release-note
Metrics were added to network plugin to report latency of CNI operations
```
/sig node
eaaa93c70c