update Kubernetes versions to address CVE-2019-11247, CVE-2019-11249

[kdomanski]

Kubernetes versions affected by CVE-2019-11247 and CVE-2019-11249 have been dropped

[kdomanski]

/assign @thz

[thz]

/lgtm
/approve

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 31e9f4fea62662b885547f3abf2b22a8b8d1f8d7

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: thz

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Needs approval from an approver in each of these files:

• config/kubermatic/static/master/OWNERS [thz]

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[zreigz]

/retest

[thz]

/retest

Is that really a flake??

[zreigz]

/retest

Is that really a flake??

yes :(

[zreigz]

/retest

[kdomanski]

/cherry-pick release/v2.11

[kubermatic-bot]

@kdomanski: #4066 failed to apply on top of branch "release/v2.11":

error: Failed to merge in the changes.
Using index info to reconstruct a base tree...
M	config/kubermatic/static/master/updates.yaml
Falling back to patching base and 3-way merge...
Auto-merging config/kubermatic/static/master/updates.yaml
CONFLICT (content): Merge conflict in config/kubermatic/static/master/updates.yaml
Patch failed at 0001 update Kubernetes versions to address CVE-2019-11247, CVE-2019-11249

In response to this:

/cherry-pick release/v2.11

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