Migrate e2e tests Container Registry usage to Artifact Registry

[aabmass]

• Push images to GAR
• Upgrading to latest test runner docker image which lives in GAR
• Update wait-for-image.sh and build scripts that were coupled to gcr.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.80%. Comparing base (4caace7) to head (1dc155f).
Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #882      +/-   ##
==========================================
+ Coverage   61.03%   61.80%   +0.76%     
==========================================
  Files          56       58       +2     
  Lines        5903     6063     +160     
==========================================
+ Hits         3603     3747     +144     
- Misses       2143     2156      +13     
- Partials      157      160       +3     

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