HDFS-10377. CacheReplicationMonitor shutdown log message should use INFO level (Yiqun Lin via cmccabe)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/CacheReplicationMonitor.java

@@ -167,7 +167,7 @@ public class CacheReplicationMonitor extends Thread implements Closeable {
         try {
           while (true) {
             if (shutdown) {
-              LOG.debug("Shutting down CacheReplicationMonitor");
+              LOG.info("Shutting down CacheReplicationMonitor");
               return;
             }
             if (completedScanCount < neededScanCount) {