Make thresholds impossible to breach in k6 tests

[xin-hedera]

Description:

This PR changes the k6 test thresholds so the test suite will not fail.

Related issue(s):

Fixes #8281

Notes for reviewer:

The minio server, testkube api server, and testkube operator pods already have high priority class.

After reviewing the testkube PR which is supposed to address the issue I created, I'm convinced that the reconciler implemented by the PR has different logic then the normal test case / test suite execution flow, yes it differs in that if a test case fails the reconciler will not scrape test artifact, and for test suite, it will mark the suite as failed.

Checklist

• [x] Documented (Code comments, README, etc.)
• [ ] Tested (unit, integration, etc.)

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.54%. Comparing base (9a3cb37) to head (773c877).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8594 +/- ## ============================================ + Coverage 91.58% 92.54% +0.95% Complexity 7371 7371 ============================================ Files 699 895 +196 Lines 21688 29543 +7855 Branches 2372 3607 +1235 ============================================ + Hits 19864 27341 +7477 - Misses 1055 1385 +330 - Partials 769 817 +48 ```

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