can I reference instance data in AWS::AutoScaling::LaunchConfiguration

We are spinning up Elasticsearch in docker containers as part of an auto scaling group and using the launchconfiguration to create the configuration file.

Ideally I would like to use the config.files to create the configuration, but I need to also set the instances IP address as the publish_host for ES.

Right now I have this in my config.files:

          "/data/elasticsearch.yml" : {
            "content" : { "Fn::Join" : ["", [
              "path.plugins: /elasticsearch/plugins\n\n",
              "network.publish_host: INSTANCE_IP\n",
              "node.name: INSTANCE_NAME\n",
              "cluster.name: ", { "Ref" : "AWS::StackName" }, "\n\n",
              "cloud.aws.region:\n",
              " ", { "Ref" : "AWS::Region" }, "\n",
              "discovery:\n",
              " type: ec2\n",
              "\n",
              "discovery.ec2.tag.Jarfish: ElasticSearch\n",
              "discovery.ec2.tag.Stack: ", { "Ref" : "AWS::StackId" }, "\n",
              "\n",
              "cloud.node.auto_attributes: true\n",
              "discovery.zen.minimum_master_nodes: 2\n"
            ]]}

and I later use sed do replace the INSTANCE_IP and INSTANCE_NAME as part of a script in the UserData block. It works, but has me creating the config in 2 places.

Is there a way to reference the current instance and its IP via Fn::GetAtt or Ref as part of the files like I can for the StackId and StackName?

It seems that it's possible to get the IP address of an Instance type, but since this is a LaunchConfiguration, I don't see a way to get the InstanceID that could then be used to get the IP ...