LRA coordinator jar tests are integration tests

The tests of in the LRA coordinator-jar module uses container (in this case the WildFly) and thus are considered to be integration tests. The LRA uses for integration tests failsafe (ie. the other tests of the LRA project work that way). The coordinator-jar tests should be configured with maven failsafe plugin as well.

Beside this change narrows the way how the tests are handled in LRA it provides a foundations for making the test runnable not only with WildFly but with quarkus as coordinator.