fix: kube-proxy image on Azure Stack deployments

[jadarsie]

Reason for Change:

Disconnected deployments on ASH using v0.61.0 fail as the kube-proxy manifest is referencing an image that is not present in the VHD. I suspect this was introduced by #4249.

As v1.16 is now unsupported, it should be safe to return to how things were before #3529.

Credit Where Due:

Does this change contain code from or inspired by another project?

• No
• Yes

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[codecov]

Codecov Report

Merging #4329 (f1704c7) into master (177303c) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4329      +/-   ##
==========================================
- Coverage   72.06%   72.06%   -0.01%     
==========================================
  Files         141      141              
  Lines       21634    21633       -1     
==========================================
- Hits        15590    15589       -1     
  Misses       5093     5093              
  Partials      951      951              

Impacted Files	Coverage Δ
pkg/api/addons.go	98.02% <100.00%> (-0.01%)	⬇️

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[jackfrancis]

/lgtm

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