currently we embed integration test with PR CI but: 1.we will add more and more integration test case 2.test time will be more and more longer 3.integration test should include work with multiple SC versions 4.......
so, maybe it's better that make integration test to be a independent project, and run it once a day at least some other idea of integration test: https://issues.apache.org/jira/browse/SCB-719 what's your suggestion?
