feat: add support for Kubernetes v1.17.8

[mboersma]

Reason for Change:
See https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.17.md#changelog-since-v1177

Issue Fixed:

Requirements:

• Kubernetes artifacts built and pushed by Azure Pipelines
• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[mboersma]

/hold

This has a temporary commit for testing that should be discarded before merging.

[codecov]

Codecov Report

Merging #3552 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3552   +/-   ##
=======================================
  Coverage   73.19%   73.19%           
=======================================
  Files         147      147           
  Lines       25078    25078           
=======================================
  Hits        18355    18355           
  Misses       5589     5589           
  Partials     1134     1134           

Impacted Files	Coverage Δ
pkg/api/common/versions.go	96.84% <ø> (ø)

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[mboersma]

This passed CI, so I'll strip off the testing commit and it should be ready for review.

[mboersma]

/hold cancel

[jackfrancis]

/lgtm

[acs-bot]

New changes are detected. LGTM label has been removed.

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis, mboersma

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