Move elasticsearch scheme to defaults

Change-Id: I107b6f3290878bb9e5c91075544f96a45d075f43
PROD-related: PROD-30527
diff --git a/fluentd/label/default_output/elasticsearch.yml b/fluentd/label/default_output/elasticsearch.yml
index 398ea8c..daf95dd 100644
--- a/fluentd/label/default_output/elasticsearch.yml
+++ b/fluentd/label/default_output/elasticsearch.yml
@@ -2,9 +2,6 @@
 - service.fluentd.agent.output.elasticsearch
 - system.fluentd.label.default_output.filter.common
 parameters:
-  _param:
-    fluentd_elasticsearch_host: 127.0.0.1
-    elasticsearch_port: 9200
   fluentd:
     agent:
       config:
@@ -13,4 +10,5 @@
             match:
               elasticsearch_output:
                 host: ${_param:fluentd_elasticsearch_host}
-                port: ${_param:elasticsearch_port}
+                port: ${_param:fluentd_elasticsearch_port}
+                scheme: ${_param:fluentd_elasticsearch_scheme}