Broken install-vm.sh was not detected by any test job

[tnqn]

"install-vm.sh" was broken since v1.15.0 but never detected. There were several reasons why it was overlooked. See the following thread.

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Is there any test that validates hack/externalnode/install-vm.sh?

Yes, I think test-vm-e2e validates it. I think there are two reasons why it was not detected when releasing 1.15:

1. The trigger comment was not received by jenkin due to transient issue as there was no run since 21th Aug, 2023.
2. "test-vm-e2e" used the same check name as "test-e2e" to report status, which made it overlooked easily. I will create an issue for it.

Just found the job only validates non-containerized method.

Originally posted by @tnqn in #5957 (comment)

[tnqn]

cc @XinShuYang @wenyingd

[roopeshsn]

Could you point me to the test-vm-e2e job? @tnqn

[tnqn]

@roopeshsn thanks for your interest. However this is an issue too specific to the CI and test infra, which is not proper for new contributors.

If you want to take an item, I just filed #5966 and you may feel free to take it.

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