./jboss-eap-7.1/modules/system/layers/base/org/wildfly/security/elytron/main/module.xml 

 <exclude path="org/wildfly/wildfly/security/manager/_private"/>

<module xmlns="urn:jboss:module:1.3" name="org.wildfly.security.elytron">

    <exports>
        <exclude path="org/wildfly/security/_private"/>
        <exclude path="org/wildfly/wildfly/security/manager/_private"/>
    </exports>