Kubernetes release v1.10.9-beta.0

Based on https://github.com/kubernetes/kubernetes/releases/tag/v1.10.9-beta.0
Merge pull request #65637 from gnufied/automated-cherry-pick-of-#65598-upstream-release-1.10

Automatic merge from submit-queue.

Automated cherry pick of #65598: Fix comments about default mount propagation

Cherry pick of #65598 on release-1.10.

#65598: Fix comments about default mount propagation

```release-note
None
```

Kubernetes-commit: f34169348cf3c273ed6c140a422470c1a7e56259
tree: c44902392a7c00724f391298d3e4c521027373da
  1. .github/
  2. admission/
  3. admissionregistration/
  4. apps/
  5. authentication/
  6. authorization/
  7. autoscaling/
  8. batch/
  9. certificates/
  10. core/
  11. events/
  12. extensions/
  13. Godeps/
  14. imagepolicy/
  15. networking/
  16. policy/
  17. rbac/
  18. scheduling/
  19. settings/
  20. storage/
  21. code-of-conduct.md
  22. CONTRIBUTING.md
  23. LICENSE
  24. OWNERS
  25. README.md
README.md

This repo is still in the experimental stage. Shortly it will contain the schema of the API that are served by the Kubernetes apiserver.