* Refactor registry center structure

* Refactor registry center structure

* For code format

* Use YamlSchemaMetaData instead of YamlLogicSchemaMetaData

* Remove useless YamlLogicSchemaMetaData

* Rename YamlSchema

* Update javadoc

* Rename package name

* Rename SchemaChangedNotifier

* Rename SchemaPersistEvent

* Rename SchemaChangedEvent

* Rename PhysicalSchemaMetaData to ShardingSphereSchema

* Fix checkstyle

* remove dbcp in CenterConfigTest

* rename DataSourceFixture to MockDataSource

* Remove useless ReplicaQueryTableAddressingMetaDataDecorator

* Switch class name of ShardingSphereMetaData and ShardingSphereSchema

* Adjust seq of ShardingSphereMetaData's constructor

* Remove LogicSchemaMetaData.unconfiguredSchemaMetaDataMap

* Remove LogicSchemaMetaData

* Rename LogicSchemaMetaDataLoader

* Add metadata.schema package

* Fix spi

* Rename SchemaMetaDataLoader

* Rename SchemaMetaDataNotifier

* Update doc for SQLParserFacade

* Rename module name from primary-replica-replication to replica-query

* Rename primary-replica-replication to replica-query

* Rename Primary-Replica Replication to replica query

* Rename primary_replica_replication to replica_query

* Rename primary replica replication to replica query

* Rename PrimaryReplicaReplication to ReplicaQuery

* Rename read-write-split to replica-query

* Rename database.model

* Rename package name from metadata.schema to metadata.rule

* Rename package name from metadata.database to metadata.schema

* Add package name metadata.model

* Fix spi

* Fix spi

* Fix spi

* minor refactoring

* extract method

* reduce indentation

* Rename ShardingType

* Rename ShardingType

* Rename master-slave to primary-replica-replication

* Refactor HintManager

* Rename HintSetPrimaryOnlyCommand

* Refactor HintShowStatusExecutor

* Refactor ShardingCTLHintBackendHandlerTest

* Refactor ReplicaLoadBalanceAlgorithm

* Refactor test cases

* Refactor test cases

* Refactor integrate test cases

* Refactor integrate test cases

* refactor change YamlRuleSchemaMetaData same with  RuleSchemaMetaData

* change for cr

* add test of default constructor

* Rename PrimaryReplicaReplication in code

* Rename PrimaryReplicaReplication in integrated test cases

* Rename PrimaryReplicaReplication in integrated test cases

* Fix data

* Fix data

* Refactor test case for shardingsphere-jdbc-governance-spring-namespace

* Refactor RuleSchemaMetaData.unconfiguredSchemaMetaDataMap to Map<String,Collection<String>>,  due to unconfigured table only need table name

* fix checkstyle

* fix checkstyle issue

* fix test

* reactor shadow api

* fix miss examples
Co-authored-by: Nyanick.xia <yann.xia@daocloud.io>

* Refactor config center node

* Add unit test for config center node

* Hide internal impl with datasource persist in governance module

* remove !!org.apache.shardingsphere.governance.core.yaml.config.YamlDataSourceConfiguration

* fix checkstyle

* fix scaling test

* refactor eventbus

* add services