Add release 1.17 to metadata.yaml

[willie-yao]

/kind cleanup

What this PR does / why we need it:

Adds the impending 1.17 release series to metadata.yaml.

Which issue(s) this PR fixes:

N/A, but see #4986 for prior art.

Special notes for your reviewer:

• cherry-pick candidate

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.25%. Comparing base (d414308) to head (73c2edd).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5135   +/-   ##
=======================================
  Coverage   51.25%   51.25%           
=======================================
  Files         273      273           
  Lines       24651    24651           
=======================================
  Hits        12636    12636           
  Misses      11229    11229           
  Partials      786      786           

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[mboersma]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: d66f6a8191b332703810667f66f1ef7cf29e8b33

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mboersma

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