make tools deployment proxy server optional

[cfryanr]

Introduce a new ytt value that can be used by CI jobs. The default behavior is the same as before, which is to deploy the proxy server.

Release note:

NONE

[netlify]

✅ Deploy Preview for pinniped-dev canceled.

Name	Link
🔨 Latest commit	6133276
🔍 Latest deploy log	https://app.netlify.com/sites/pinniped-dev/deploys/67c9f18a21ae910008cb3522

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.95%. Comparing base (a7a3016) to head (6133276).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2253   +/-   ##
=======================================
  Coverage   24.95%   24.95%           
=======================================
  Files         379      379           
  Lines       62172    62172           
=======================================
  Hits        15516    15516           
  Misses      46320    46320           
  Partials      336      336           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.