Add module names to be used for 3rd party (external) JPA persistence providers (helpful for testing)

for example, if provider="oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider", the provider module name and provider adapter should be pre-determined or generated based on the provider class name.

EclipseLink module:
<property name="jboss.as.jpa.providerModule" value="org.eclipse.persistence" />

TopLink module:
<property name="jboss.as.jpa.providerModule" value="oracle.toplink" />