fix RS_LOG_ROLL value and add rsQuotaManager back

Author: huiruan

hbase-server/src/main/java/org/apache/hadoop/hbase/executor/ExecutorType.java

@@ -58,7 +58,7 @@ public enum ExecutorType {
 
   RS_FLUSH_OPERATIONS(37),
   RS_RELOAD_QUOTAS_OPERATIONS(38),
-  RS_LOG_ROLL(38);
+  RS_LOG_ROLL(39);
 
   ExecutorType(int value) {
   }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java

@@ -2087,6 +2087,7 @@ private void initializeThreads() {
 
     // Setup the Quota Manager
     rsQuotaManager = new RegionServerRpcQuotaManager(this);
+    configurationManager.registerObserver(rsQuotaManager);
     rsSpaceQuotaManager = new RegionServerSpaceQuotaManager(this);
 
     if (QuotaUtil.isQuotaEnabled(conf)) {