LPS-51124 Simplify test logic to make it focus on what need to be tested.
LPS-51124 Move initialization of captureHandler to setUp.
LPS-51124 Should clear first to make sure node number equals to what you set.
LPS-51124 Add reset methods, prepare for next step.
LPS-51124 Combine test methods, add comments, make it more readable.
LPS-51124 Merge LuceneClusterUtilWithExceptionAdvice into LuceneClusterUtilAdvice, too wasteful to create 2 advices for the same pointcut.
LPS-51124 The pointcut expression is an unique match, no need to do instanceof to prevent overloaded method matching
LPS-51124 Simplify LuceneClusterUtilAdvice
LPS-51124 SF