Use "exactMatch" to check if captured flow rule is expected one

[Yi-Tseng]

Some tests are using codes like below:

flowRuleService.applyFlowRules(eq(expectedFlow));
expectLastCall().andVoid().once();
verify(flowRuleService);

The eq function uses equals from the object, and the DefaultFlowRule won't actually compare the treatment.

We should capture the flow rule and use exactMatch to compare the result.