VOL-406 add logging configuration to swarm stack files

Change-Id: I6e75649c6f1cef3948437e59c778c562c828badc
diff --git a/compose/docker-compose-stats-swarm.yml b/compose/docker-compose-stats-swarm.yml
index 86645a8..447be5c 100644
--- a/compose/docker-compose-stats-swarm.yml
+++ b/compose/docker-compose-stats-swarm.yml
@@ -16,6 +16,11 @@
 services:
   dashd:
     image: cord/dashd
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: 3
     deploy:
       replicas: 1
     entrypoint:
@@ -30,6 +35,11 @@
 
   shovel:
     image: cord/shovel
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: 3
     deploy:
       replicas: 1
     entrypoint: