ISSUE-6200: Flaky-test: PulsarStateTest.testSourceState

[sijie]

Original Issue: apache#6200

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org.apache.pulsar.tests.integration.functions.PulsarStateTest
  -     PulsarStateTest.testSourceState
         -     which gave: java.lang.AssertionError: expected [true] but found [false]

Related to the issues here: apache#6137

To Reproduce
I reproduced this issue locally by running the tests in PulsarStateTest while running:
stress-ng --matrix 0 -t 15m
which was running during the entire test process.
It's still intermittent though.

I have attached the log that I produced locally.

log.txt