Increase delay duration to avoid pod scheduling issue

[xin-hedera]

Description:

This PR addresses the ramp up pod scheduling issue during k6 perf tests

• Increase delay duration between test steps

Related issue(s):

Fixes #8591

Notes for reviewer:

As mentioned in the ticket, the default HPA scale down stabilization window is 300s. Setting the delay to 330s would give enough time to completely scale down the deployment tested against in the previous test step to its min replicas.

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 (c521fb7) to head (f9c4587). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8592 +/- ## ============================================ - Coverage 92.55% 92.54% -0.02% - Complexity 7366 7371 +5 ============================================ Files 895 895 Lines 29521 29543 +22 Branches 3604 3607 +3 ============================================ + Hits 27324 27341 +17 - Misses 1383 1385 +2 - Partials 814 817 +3 ```

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