Can you provide more clarity on this? Forwarder management is just one methodology for managing forwarders. Adding apps to the server class is the "out of the box" method provided by splunk to add apps to remote universal forwarders.
Do you want to push the outputs.conf file itself to the forwarder?
If so, you can use this link to accomplish this:
http://docs.splunk.com/Documentation/Splunk/6.6.3/Admin/Wheretofindtheconfigurationfiles
Create an app with an outputs.conf and push it out to the forwarder. Note that the system/local directory takes priority so you must ensure that the properties in system/local are not already utilized otherwise, it won't take precedence.
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