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Merge pull request #45924 from janetkuo/daemonset-history

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Automatic merge from submit-queue

Implement Daemonset history

~Depends on #45867 (the 1st commit, ignore it when reviewing)~ (already merged)

Ref https://github.com/kubernetes/community/pull/527/ and https://github.com/kubernetes/community/pull/594

@kubernetes/sig-apps-api-reviews @kubernetes/sig-apps-pr-reviews @erictune @kow3ns @lukaszo @kargakis 

---

TODOs:
- [x] API changes
  - [x] (maybe) Remove rollback subresource if we decide to do client-side rollback 
- [x] deployment controller 
  - [x] controller revision
    - [x] owner ref (claim & adoption)
    - [x] history reconstruct (put revision number, hash collision avoidance)
    - [x] de-dup history and relabel pods
    - [x] compare ds template with history 
  - [x] hash labels (put it in controller revision, pods, and maybe deployment)
  - [x] clean up old history 
  - [x] Rename status.uniquifier when we reach consensus in #44774 
- [x] e2e tests 
- [x] unit tests 
  - [x] daemoncontroller_test.go 
  - [x] update_test.go 
  - [x] ~(maybe) storage_test.go // if we do server side rollback~

kubectl part is in #46144

--- 

**Release note**:

```release-note
```
This commit is contained in:
Kubernetes Submit Queue
2017-06-03 16:52:38 -07:00
committed by GitHub
parent be987b015c 85ec49c9bb
commit dbd1503b65
53 changed files with 3220 additions and 1630 deletions
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<td class="tableblock halign-left valign-top"><p class="tableblock">integer (int32)</p></td>
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<td class="tableblock halign-left valign-top"><p class="tableblock">collisionCount</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Count of hash collisions for the DaemonSet. The DaemonSet controller uses this field as a collision avoidance mechanism when it needs to create the name for the newest ControllerRevision.</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">false</p></td>
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<td class="tableblock halign-left valign-top"><p class="tableblock">templateGeneration</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">A sequence number representing a specific generation of the template. Populated by the system. It can be set only during the creation.</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">DEPRECATED. A sequence number representing a specific generation of the template. Populated by the system. It can be set only during the creation.</p></td>
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<td class="tableblock halign-left valign-top"><p class="tableblock">revisionHistoryLimit</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">The number of old history to retain to allow rollback. This is a pointer to distinguish between explicit zero and not specified. Defaults to 10.</p></td>
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