Automatic merge from submit-queue (batch tested with PRs 64974, 65009, 65018). 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>.
daemon: add custom node indexer
**What this PR does / why we need it**:
<img width="863" alt="screen shot 2018-06-11 at 20 54 03" src="https://user-images.githubusercontent.com/44136/41279030-ad842020-6e2b-11e8-80d4-0a71ee415d30.png">
Based on this CPU profile, it looks like a lot of CPU cycles/cores are spend by retrieving a list of **all** pods in the cluster. On large clusters with multiple daemonset this might lead to locking the shared pod informer List() of every other controller that might need it or use it.
The indexer in the PR will index the pods based on nodeName assigned for these pods. That means the amount of pods returned from the ByIndex() function is fairly small and the call should be fast.
Additionally we can also use this index to check whether a node already run the pod without listing all pods in the cluster again.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
e7bdebd5f1
