Use testTriggerInfo as expected value of testUnifiedDataStore::test_getTriggerList.

Since I've noticed that currently this test should be same with
testDBClientHatohol::test_testGetTriggerInfoList, I use same
expected data at this time. On the other hand these implementations
may become different in the future because VirtualDataStore* may
have other data sources (such as on-memory data). So I leave this
test.
Remove needless include