[cluster] Fix the 'preload_image' role

[kpouget]

No description provided.

[openshift-ci]

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[kpouget]

/test rhoai-light kserve gpu

[topsail-bot]

🟢 Test of 'rhoai test test_ci' succeeded after 00 hours 17 minutes 32 seconds. 🟢

• Link to the test results.

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Test configuration:

# RHOAI: run kserve test test_ci
PR_POSITIONAL_ARGS: gpu
PR_POSITIONAL_ARG_0: kserve-rhoai-light
PR_POSITIONAL_ARG_1: gpu

[kpouget]

test passed ❤️ (preload is there), merging this.