Add delete IndexFile unit test

[ISSUE #1866] Fix transaction message doc

[ISSUE #1883] Doc error about admin tool WipeWritePermSubCommand

fix wipeWritePerm doc desc

close #1857 

[ISSUE #1821]Fix the issue that MessageClientIDSetter#getIPFromID return wrong pid

fix(test):fix the issue that MessageClientIDSetter#getIPFromID return wrong pid when pid greater than short type max value

[ISSUE #1781]Fix asynchronous send retry

[ISSUE #1515] SYNC_MASTER could be change into pipeline manner 

* fix(tools):fix the issue that queryCq command of mqadmin returned incorrect data

* fix(mqadmin):set status code in advance in queryConsumeQueue method

* typo fix

* add MessageExt.getBrokerName()

* add brokerName for toString

* get brokerName  from mq

* min value for autoCommitInterval

* use constant variable

* typo fix

* add MessageExt.getBrokerName()

* add brokerName for toString

* get brokerName  from mq

* pid 4bytes

* pid is 4 bytes

* #1751 fix bug and add a unit test

* #1751 short pid

* 保持原来

* #1751 remove repeat code

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

Fix bug: The stats data could be inaccurate of first minute/hour/day

[for 4.6.0] Fix concurrent problem in ProducerManager.getAvaliableChannel; Fix problem that tx check may loss when channel is busy (#1627)

[ISSUE #1706]feat(pull_consumer) refactor the consumer offset update logic