Handle case where cluster is already terminated during status refresh #6693
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Partially fixes https://buildkite.com/skypilot-1/smoke-tests/builds/2430/steps/canvas?jid=0198a7f9-1fbf-49c2-874f-6614e854648d, together with #6697.
During status refresh (which also gets called during
sky down), we may callbackend.is_definitely_autostopping(). At this point, the cluster might already be terminating/terminated, causing this call to fail. After moving the autostop to gRPC in #6574, we missed adding a try catch block to the gRPC call, so instead of returning False, we bubble up the gRPC timeout exception.This PR fixes it by returning False from this function when encountering an exception, which is the same behaviour in the legacy SSH execution, returning False if exit code != 0.
Tested (run the relevant ones):
bash format.sh/smoke-test(CI) orpytest tests/test_smoke.py(local)/smoke-test -k test_name(CI) orpytest tests/test_smoke.py::test_name(local)/quicktest-core(CI) orpytest tests/smoke_tests/test_backward_compat.py(local)