Fix logging to capture jobControlId

Alluxio/Community#643
Fix logging to capture jobControlId

this will help in getting jobControlId in the logs, and will help in
getting status information about the job

its just log level changes

pr-link: Alluxio#16780
change-id: cid-551cf01210bb24d39239199adeb398201f67c184

job/server/src/main/java/alluxio/master/job/tracker/CmdJobTracker.java

@@ -118,7 +118,8 @@ private void runDistributedCommand(CmdConfig cmdConfig, long jobControlId)
         MigrateCliConfig migrateCliConfig = (MigrateCliConfig) cmdConfig;
         AlluxioURI srcPath = new AlluxioURI(migrateCliConfig.getSource());
         AlluxioURI dstPath = new AlluxioURI(migrateCliConfig.getDestination());
-        LOG.info("run a dist cp command, cmd config is " + cmdConfig.toString());
+        LOG.info("run a dist cp command, job control id: {}, cmd config: {}",
+            jobControlId, cmdConfig);
         cmdInfo = mMigrateCliRunner.runDistCp(srcPath, dstPath,
             migrateCliConfig.getOverWrite(), migrateCliConfig.getBatchSize(),
             jobControlId);