* feature. add update and delete operation on instance's metadata 90%
* 1.add unit test
2.fix-locateInstance error
* format code style
* add @link on class
* move metadata operate to InstanceController.
* format code 50%
* complete bacth operation of metadata
* remove unnecessary test unit
* modify the variable name
* perfect log info
* modify consumer's dto to match it's description
* 1.rename class OperationContext -> InstanceOperationContext
2.move Map operation from NamingUtils to MapUtils
* check datum is null
* code refactor.
* 1. code refactor
2. modify the batch operate http param. just support (1 services : n instance)
* 1.set default clusterName if instance not set
2.fix client params not set instances bug
* npe fix
* 1.remove consistencyType *, just support ephemeral or persist.
2.remove moditfy property method in InstanceOperationContext and InstanceOperationInfo, it just defined by constructor.
* add instance controller test
* fix code too length
* update the param name
* add feature's version of start
* Refactor nacos task execute engine
* Refactor nacos task execute engine
* For checkstyle
* For checkstyle
* Use ThreadUtils to reduce duplicate codes
* Set custom logger for TaskExecuteWorker
* Set custom logger for TaskExecuteWorker
* add domain's judgement
* modify domain's judgement, can resolve = true
* remove judgement in 'if' code block
* replace Ip to IP in InetUtils
* log warn info when domain can not be resolved
* fix vaiable name
* 1.in server, check serviceName's format 'groupName@@serviceName', groupName and serviceName can't be blank
2.in client, check 'groupName@@serviceName', groupName and serviceName can't be blank
* ignore the check to groupName
* check split's length instead of exception to check argument
* 1.add some notes
2.remove unnecessary code
* modify the notes
* Add receive data and verify data distro protocol interface
* Use new distro implmentation to handle sync datum and checksum request
* Use new distro implmentation to handle get datum request.
* Add ServiceManagerTest
* Add DistroConsistencyServiceImplTest
* Add new distro entities
* Add new distro sync data change
* add new VerifyTask to do checksum.
* Replace old sync task and checksum task
* Add retry sync change task.
* Fix high cpu load
* For checkstyle
* Combine naming sync task to reduce http cost
* Move some classes
* Refactor keys combined logic
* enhance package construct
* Fix unit test
* For pmd
* 1.use server cacheMillis event service deleted
2.naming client UpdateTask's interval will inc by failCount that connect with server
* 1.move failCount to updateTask
2.redefine the updateService method name. updateServiceNow -> updateService, wrap updateService in updateServiceNow when first getServiceInfo
* 1.create push client even service is not exist
2.serviceInfo's hosts is empty or can't connect to server both add the updateTsk interval
* format the indent
* move the permission code of nacos-core module to nacos-auth module.
* Fix some code style issues
* address server module auth package name change.
* test change
* Incorrect package name correction
* fix#3486
* modify code suit checkstyle
* add apache licenses
* change the publish version of new class
* set the char "-->" in interface
* set the char "-->" in interface
* code format
* add unit case of com.alibaba.nacos.core.code.ControllerMethodsCache.getMethod
* code format follow nacos-code-style
* code format follow nacos-code-style
* [ISSUE#3179]Replace the NotifyCenter with new refactor in the core and test module.
* [ISSUE#3179]Replace package in the nacos-logback.xml.
* [ISSUE#3179]code reformat.
* Use new code style for nacos-cmdb module.
* Check again for nacos-common module.
* Check again for nacos-core module.
* Check again for nacos-naming module.
* skip nacos-test in checkstyle
