[ISSUE #1409] Fix the bug when use queryMsgByKey or queryMsgByUniqueKey command in aclEnable = true (#1756)

* Remove the useless files

* Replace PermSize with MetaspaceSize, details see http://openjdk.java.net/jeps/122

* Update DLedgerCommitLog.java (#1145)

Delete useless code

* Remove the duplicate content

* Polish the comment (#1107)

* Minor Typo fix  (#860)

* [ISSUE #1082] Fix disconnection of HA (#1083)

* fixed the text description in chinese doc (#1339)

* fix /dev/shm not found on some OSs (#1345)

* Refactor the protection logic when pulling

* change the MQVersion variable to rocketmq 4.5.2 version;

* Minor polish

* Fix the wrong package name

* [maven-release-plugin] prepare release rocketmq-all-4.5.2

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

* [RIP-15]Add Ipv6 support for RocketMQ

* [issue#1164]return the codes to original reput method part.

* [issue#1164]fix issue that Consumer Instance can't consume message from slave when cluster is in the high level tps and master has been killed.

* [issue#1164]if the broker is a master node,then modify reputFromOffset correctly.

* [issue#1164]add some coding comments.

* [ISSUE#1156]new mqadmin API for ACL configuration.Add dataVersion and write data to acl yaml config file in the acl module.

* [ISSUE#1156]add unit test cases for new acl mqadmin API command which adding dataversion part.

* [ISSUE#1156]implement update,delete and query Acl config version in new acl mqadmin API command.

* [ISSUE#1156]polish and optimize the implementation for new acl mqadmin API command.

* [ISSUE#1156]fix the issues that topicPerms and groupPerms can't be updated and there is NPE when querying acl config version.

* [ISSUE#1156]fix small issue that specify wrong plainAccessConfig attribute,the correct one is AccessKey.

* [ISSUE#1156]add updateGlobalWhiteAddr subcommand codes for mqadmin acl command.

* [ISSUE#1156]adjust some codes for cluster acl config version list in the mqadmin acl commands.

* [ISSUE#1156]add acl mqadmin command part in the acl user_guide docs.

* [ISSUE#1156]polish and optimize some part of acl mqadmin command codes.

* [ISSUE#1156]fix code comments issue that the first letter needs to be capitalized and adjust the contents of acl user_guide.

[ISSUE #1147]Broker will report Exception if open the aclEnable and enableDLegerCommitLog flag at the same time. (#1149)

* [issue#1078]fix User can't use mqadmin command normally if they don't copy the tool.yml file to their related fold and AclEnable flag is closed.

* [issue#1147]Broker will report Exception if open the aclEnable and enableDLegerCommitLog flag at the same time.

* [issue#1147]Broker will report Exception if open the aclEnable and enableDLegerCommitLog flag at the same time.

* [issue#1147]Add the restriction of Acl in the acl's user guide.

* [issue#1147]Adjust some codes for acl issue that users can't open the aclEnable and use Master/Slave or Dledger the same time.

* [issue#1147]Adjust and optimize some codes for acl issue that users can't open the aclEnable and use Master/Slave or Dledger the same time.

* [issue#1147]return back for original codes for acl issue that users can't open the aclEnable and use Master/Slave or Dledger the same time.

[ISSUE #1078]fix User can't use mqadmin command normally if they don't copy the tool.yml file to related fold and AclEnable flag is closed.  (#1079)

* [issue#1078]fix User can't use mqadmin command normally if they don't copy the tool.yml file to their related fold and AclEnable flag is closed.

[ISSUE #1086] Fix NullPointerException in PlainPermissionLoader if permissions are not configured(with admin user)

[issue#789]fix NullPointerException in the PlainAccessValidator#parse() method when recieved some admin request command,if configed no aclRPCHook. (#819)

* [issue#790]fix defaultTopicPerm and defaultGroupPerm values which are in the yaml config file doesn't work.

* [issue#790]fix defaultTopicPerm and defaultGroupPerm doesn't work,fix the unit test.

* [issue#789]fix NullPointerException in the PlainAccessValidator#parse() method when recieved some admin request command,if configed no aclRPCHook.

[issue#790]fix defaultTopicPerm and defaultGroupPerm values which are in yaml config file dosen't work. (#798)

* [issue#790]fix defaultTopicPerm and defaultGroupPerm values which are in the yaml config file doesn't work.

* [issue#790]fix defaultTopicPerm and defaultGroupPerm doesn't work,fix the unit test.

[ISSUE#662]capitalizing the first letter in comments and removing the unless comments for acl and msg trace feature codes. (#669)

* [ISSUE#662]capitalizing the first letter in comments and removing the  unless comments for acl and msg trace feature codes.

* [ISSUE#662]polish the acl feature codes.

* [ISSUE#403] fix acl config file watch bug,clean and optimize the codes for acl feature.

* [ISSUE#403] fix acl config file watch bug,clean and optimize the codes for acl feature.

* [ISSUE#403]fix lock/unlock issue,and optimize the codes.

[ISSUE#525]add a switch variable(traceTopicEnable) for making msg trace worked which is decided by users and rename enableAcl flag variable to keep naming specification,such as clusterTopicEnable.

* prepare to separate production-ready projects from the external projects

* Update fastjson to the latest stable version

* Clean code, don't list the default config in JVM

* Update README.md

* update the year info in NOTICE

* Release semaphore when timeout

* [ISSUE#525]add aclClient PRCHook for message track

* [ISSUE#525]add the apache license text,remove the merged from master branch

* [ISSUE#525]add aclClient PRCHook for message track,remove the merged content of notice and readme.md from master branch,add some unit test to increase the code coverage.

* [ISSUE#403] fix some bugs and Optimization code for rocketmq's acl feature. 

* [ISSUE#403] fix some bugs and Optimization code for rocketmq's acl feature. 

* Update MQAdminStartup.java

* Update MQAdminStartup.java

* [ISSUE#403] add some test case,increasing code coverage

* [ISSUE#403] add some test case,increasing code coverage

* [ISSUE#403] fix some bugs and Optimization code for rocketmq's acl feature. 

* [ISSUE#403] fix some bugs and Optimization code for rocketmq's acl feature. 

* Update MQAdminStartup.java

* Update MQAdminStartup.java