Move Hibernate Search modules org.hibernate.search.orm, org.hibernate.search.backend-jms, org.hibernate.search.serialization-avro, org.hibernate.search.engine, org.hibernate.search.backend-jgroups to slot jdg-7.0.

The directory provider with slot for-hibernate-search-5.6 that was used only for internal purposes is also relocated to jdg-7.0.

The self-contained directory provider with slot for-hibernate-search-5.5 is kept, to be used by EAP users that need to store indexes on JDG.

Those changes will prevent clashes with internal EAP hibernate search slots.