Add support for indexing properties to infinispan subsystem schema

<distributed-cache name="default" mode="ASYNC" batching="true" owners="2">
  <transaction mode="NON_XA"/>
  <eviction strategy="NONE"/>
   <indexing index="LOCAL">
       <property name="hibernate.search.default.directory_provider">infinispan</property>
       <property name="hibernate.search.infinispan.cachemanager_jndiname">java:jboss/infinispan/container/HibernateSearch</property>
       <property name="hibernate.search.default.worker.backend">jgroups</property>
  </indexing>
</distributed-cache>