[Test] Fix XGBoost sample test flakiness

[numerology]

Fix #2405
Temporarily switch back to authoring ContainerOp using existing image. Long term fix requires the ability to set is_exit_handler = True when using component.load_component_from_url/file.

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[Ark-kun]

Long term fix requires the ability to set is_exit_handler = True when using component.load_component_from_url/file.

We can also change the dsl.ExitHandler so that it removes the task from the main pipeline.

[numerology]

Long term fix requires the ability to set is_exit_handler = True when using component.load_component_from_url/file.

We can also change the dsl.ExitHandler so that it removes the task from the main pipeline.

That's actually better. It seems a bit of weird to 'double' specify this property of an op

[Ark-kun]

This PR should fix the root of the problem: #2411

[numerology]

This PR should fix the root of the problem: #2411

Thanks.

[numerology]

/close

[k8s-ci-robot]

@numerology: Closed this PR.

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/close

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