Merge branch 'stable-2.14'

* stable-2.14:
  Configuration: Use Logger's built-in string formatting

Change-Id: I10a2b96a06d189c76bd09f9784c7d6ebfcbee88d
diff --git a/src/main/java/com/googlesource/gerrit/plugins/ratelimiter/Configuration.java b/src/main/java/com/googlesource/gerrit/plugins/ratelimiter/Configuration.java
index a0a0dcc..db21aa9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/ratelimiter/Configuration.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/ratelimiter/Configuration.java
@@ -75,7 +75,7 @@
 
       // Group either is mis-configured, never existed, or was deleted/removed since.
       if (groupDesc == null) {
-        log.warn(String.format("Invalid configuration, group not found: %s", groupName));
+        log.warn("Invalid configuration, group not found: {}", groupName);
       } else {
         groups.put(groupName, groupDesc.getGroupUUID());
       }