Merge pull request #181 from swisspost/feature/redismonitor_logs

Do not log warnings for non-number redis metrics

src/main/java/org/swisspush/reststorage/redis/RedisMonitor.java

@@ -114,7 +114,7 @@ private void collectMetrics(Buffer buffer) {
                     publisher.publishMetric(key, value);
                 }
             } catch (NumberFormatException e) {
-                log.warn("ignore field '{}' because '{}' doesnt look number-ish enough", key, valueStr);
+                log.trace("ignore field '{}' because '{}' doesnt look number-ish enough", key, valueStr);
             }
         });
     }