* add jdk11 jvm option

* add jdk11 jvm option for server

* fix jdk11 jvm option for server

* [maven-release-plugin] prepare for next development iteration

* add support JVM Flag for Java version not less than 9 (including Java 9 - 14)

* add support JVM Flag for Java version not less than 9 (including Java 9 - 14) in windows env

* remove useless comment

Co-authored-by: zhanghaoxin-at-826767166263 <COk6iTbDdOqj/yq53u9n9vPTy+3pmZNcm4mKOhImudI=>
Co-authored-by: Nrongtongjin <794220751@qq.com>

Co-authored-by: Nzhangxu16 <zhangxu16@xiaomi.com>

fix typo

Co-authored-by: Nhechengyang <hechengyang@cmss.chinamobile.com>

* fix issue#2171

* fix the issue#2171

Co-authored-by: fantow <hahaha>

[ISSUE #2118] Fix AdminBrokerProcessorTest can not pass when machine's hostname contains illegal characters

Fix issue #2088 , make the log output of RT stat makes sense.

* stringbuilder replace
Co-authored-by: Nqunlin.yi <qunlin.yi@beibei.com>

* support graceful shutdown push consumer

* remains the old shutdown method of DefaultMQPushConsumerImpl

* add unit test for graceful shutdown

* fix #1976
System Topic like SCHEDULE_TOPIC_XXXX should not be create or delete by user

* User can not send message to system topic SCHEDULE_TOPIC_XXXX

* the-->The

* fix magic number 18

* move system topic to TopicValidator except TBW102

* move TBW102 and isSystemTopic to TopicValidator

* add test code

* validateTopic --> validatorSystemTopic, validatorBlacklistTopic

* validateTopic --> validatorSystemTopic, validatorBlacklistTopic

* rename some methods

fix bug: doAfterRpcHooks execute twice.

* fix DefaultLitePullConsumerImpl NPE

* add ut

[ISSUE #2065] Fix Fastjson version for RCE problem

Fix Fastjson version for RCE problem

[ISSUE #1988] Fix the issue that can not update messageDelay correctly with mqadmin updateBrokerConfig command

use "$@" instead of #@ to make mutiple value parceled by quoted
available.

(cherry picked from commit 03e8b03ba397063945a1619293f0a15579e4764d)

[ISSUE #2042]select a new namesrv when the old one removed from namesrvAddrList

Co-authored-by: Nlishaofeng <lishaofeng@xgd.com>

Co-authored-by: N李致波 <lizhibo@lizhibodeMacBook-Pro.local>

Co-authored-by: Nhaotianfei <Tianfei.Hao@Geely.com>

[ISSUE #1971] Fix ConsumerFilterManager comment error

[ISSUE #1798] Fix MessageExt#getBornHostString NPE

Develop

[ISSUE #1400]do disk space detection in another thread

[ISSUE #1807] only increase hashSlotCount when using slot for the first time

[ISSUE #2020] Use wakeup() instead of writing duplicate code

[ISSUE #2025] Refactor  MQClientAPIImpl#processSendResponse

Remove MQClientInstance#datagramSocket Field