fix: helm value for gke tests

[amandavialva01]

Description

Fix for e2e gke tests and don't run shared cluster e2e test during nightly (or it'll interfere with the cleanup job)

Test Plan

CI passes.

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.63%. Comparing base (2ef5ab9) to head (0981fe3).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9114   +/-   ##
=======================================
  Coverage   46.63%   46.63%           
=======================================
  Files        1172     1172           
  Lines      143619   143619           
  Branches     2410     2410           
=======================================
  Hits        66983    66983           
  Misses      76431    76431           
  Partials      205      205           

Flag	Coverage Δ
backend	43.38% <ø> (ø)
harness	63.99% <ø> (ø)
web	37.77% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 4 files with indirect coverage changes

[netlify]

✅ Deploy Preview for determined-ui canceled.

Name	Link
🔨 Latest commit	0981fe3
🔍 Latest deploy log	https://app.netlify.com/sites/determined-ui/deploys/6610155943a9d10008f6463a