Increase the test coverage of jpa and jpa-distributed galleon layers

These layers must be tested independently on testsuite/layers testsuite.

These layers should also be tested in aggregation with one or more base layers it is expected to decorate, running the test with each of one separately.

We have to add new Galleon provision execution to provision a server with a base layer provisioned with jpa or jpa-distributed and add a surefire execution to run suitable WildFly tests on them.