feat: add support for Kubernetes v1.16.15

[mboersma]

Reason for Change:
See https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.16.md#changelog-since-v11614

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:

v1.16.15 is the last patch release for the 1.16 series.

[codecov]

Codecov Report

Merging #3780 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3780   +/-   ##
=======================================
  Coverage   73.19%   73.19%           
=======================================
  Files         148      148           
  Lines       25378    25378           
=======================================
  Hits        18576    18576           
  Misses       5666     5666           
  Partials     1136     1136           

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

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[mboersma]

/hold

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

[jackfrancis]

@jadarsie heads up about an Azure Stack build

[jackfrancis]

/lgtm

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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