Test LRA behaviour on different Object Stores

One of the tests (rts/lra/coordinator/src/test/java/io/narayana/lra/coordinator/TestBase.java) assumes that the ObjectStore is on a file system. We need to test on at least one other store type. The Volatile store wouldn't work in crash recovery scenarios (but it could be used for normal behaviour to give us more coverage) so the journal or JDBC store would be better options.