Title: Externalize HTTP Session from JBoss EAP 6.4 and later to JBoss Data Grid

The docs describe the addition of a new cache container and cache where externalization can be done by simply adjusting the existing web cache (repl or dist)

for example :
<cache-container name="web" aliases="standard-session-cache" default-cache="repl" module="org.jboss.as.clustering.web.infinispan" statistics-enabled="true">
                <transport lock-timeout="60000"/>
                <replicated-cache name="repl" mode="ASYNC" batching="true">
                    <file-store/>
                </replicated-cache>
                <replicated-cache name="sso" mode="SYNC" batching="true"/>
                <distributed-cache name="dist" l1-lifespan="0" mode="ASYNC" batching="true">
                    <file-store/>
                </distributed-cache>
            </cache-container>


Also there jboss-web.xml is not a must, only needed in order to fine tune settings