Suppress log copy output in gates

Change-Id: I01e58d3548d6adc4a2d6f1088773df7941da3865

tests/get_logs.sh

@@ -57,7 +57,7 @@ copy_logs() {
     fi
 
     for container in $(docker ps -a --format "{{.Names}}"); do
-        docker logs --tail all ${container} > ${LOG_DIR}/docker_logs/${container}.txt
+        docker logs --tail all ${container} &> ${LOG_DIR}/docker_logs/${container}.txt
     done
 
     # Rename files to .txt; this is so that when displayed via

tests/post.yml

@@ -34,6 +34,8 @@
         src: "/tmp/logs"
         dest: "{{ zuul.executor.log_root }}/{{inventory_hostname }}/"
         mode: pull
+        rsync_opts:
+          - "--quiet"
 
 - hosts: primary
   tasks: