extensions/geode-modules-assembly/release/tcserver/geode-p2p-tomcat-8/context-fragment.xml

<?xml version="1.0" encoding="UTF-8"?>
<Context>

    <remove:Manager className="org.apache.geode.modules.session.catalina.Tomcat6DeltaSessionManager"/>

    <add:Manager className="org.apache.geode.modules.session.catalina.Tomcat8DeltaSessionManager"
      enableDebugListener="${enable.debug.listener:false}"
      enableGatewayReplication="${enable.gateway.replication:false}"
      enableLocalCache="${enable.local.cache:false}"
      enableCommitValve="${enable.commit.valve:true}"
      preferDeserializedForm="${prefer.deserialized.form:true}"
      regionAttributesId="${region.attributes.id:REPLICATE}"
      regionName="${region.name:gemfire_modules_sessions}"/>

</Context>