[Tests] Fix test retries for Pulsar Functions integration tests #10565
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Motivation
TestRetrySupportwill call the cleanup & setup methods between test retries to enable test retries.Test retries for Pulsar Functions integration tests were broken since Functions Worker setup/teardown wasn't part of these calls.
The change also ensures correct startup order so that the Pulsar cluster is started before the Functions worker.
When running tests on JDK11 there were odd test failures that indicated an incorrect startup order.
The problems went away with these changes. These changes are necessary for running integration tests on JDK11.
Modifications
@BeforeClassannotation fromsetupFunctionWorkersmethod and call it in an overriddensetupClustermethod.@AfterClassannotation fromteardownFunctionWorkersmethod and call it in an overriddentearDownClustermethod.