Module org.infinispan.cachestore.remote was dropped

The org.infinispan.cachestore.remote module was renamed to org.infinispan.persistence.remote as part of WFLY-8207 but the Keycloak adapters that integrate into WF depend on that module. So, proposal is to add an alias module.

The module was private but projects/products that layer on top of WF/EAP legitimately use private modules. Also, this isn't really a layer, it's an adapter to allow us to integrate with an external server, so we somewhat broke ourselves.