Add customer facing service log template for resizing request-serving nodes

Author: joshbranham

hcp/RequestServingNode_resized.json

@@ -2,7 +2,7 @@
   "severity": "Info",
   "service_name": "SREManualAction",
   "log_type": "cluster-scaling",
-  "summary": "Request Serving Node Resize",
-  "description": "SRE has resized request serving nodes to ${INSTANCE_TYPE} to accommodate cluster load.",
-  "internal_only": true
-}
+  "summary": "ROSA HCP Control Plane Scaled",
+  "description": "Red Hat has scaled up your clusters control plane to accommodate increased load.",
+  "internal_only": false
+}