* 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
* Enhanced callback interface for asynchronous requests
* change class name
* add license
* change class name
* comment change
* delete AbstractCallback
* fix:#3317 change the http client implementation that nacos resttemplate depends on from apache to JDk
* Use the IoUtils.closeQuietly() method to close the InputStream
* change HttpClientBeanHolder logger output object
* [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.
* Enhanced nacos resttemplate response handler
* Enhanced nacos resttemplate response handler
* Add license
* [#3212] Modify some class name and comment
* [#3212] Modify some class name and comment
* [#3212] Modify some class name and comment
* [#3212] change the name of property
* Fix code style issue
* 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
* [#3141]fix typo and move unit test cases codes from core to common module.
* [#3141]implement DefaultSharePublisher to separate sharePublish from default publisher and fix typo.
* [#3141]fix typo and NPE issue.
* [#3141]improve performance and fix typo.
* [#3141]add removeSubscriber logical codes.
* [#3141]rename the unit test method's names.
* [#3141]fix typo.
* [#3141]fix thread unsafe and atomic issue.
* [#3117]Sink the Notify implementation into common module and optimize some parts.
* [#3117]fix typo and reformat code styles.
* [#3117]fix typo and reformat code styles.
* [#3118]fix typo and formate.
* [#3118]Unify Subsciber and SmartSubscriber, and fix some typo and reformat.
* [#3118]fix some typo and reformat.
* [ISSUE #2856][module:core、consistency]Adjust the use of thread pools
Change-Id: I793770ca0f287157dc88e3ecf1147ea308e4a547
* code optimize
Change-Id: I023ed73332f3f69c93277f25e57e0ee5c3975f02
* abstract create nacos restTemplate factory, allowing users to customize the commonly used http client config
* add class file license.
* change class file name
* Adjust some code
* [#3026]remove dependency of apache-common-lang3 in the client.
* [#1815]adjust, optimize codes and merge some class.
* [#3031]adjust some codes.
* [#3031]adjust codes and fix typo.
* [#3031]fix typo.
