* refactor registry center instance

* revise properties key

* revise properties key

* Reload and disable slave databases when proxy starts

* revise code style

* Reload and disable slave databases when proxy starts

* Reload and disable slave databases when JDBC starts

Move shardingsphere-orchestration, shardingsphere-opentracing, shardingsphere-metrics into shardingsphere-control-panel module (#5654)

* Move shardingsphere-orchestration, shardingsphere-opentracing, shardingsphere-metrics into , shardingsphere-control-panel module

* fix modules

* rename sharding-orchestration-core to shardingsphere-orchestration-core

* rename sharding-orchestration-center to shardingsphere-orchestration-center

* Rename sharding-orchestration to shardingsphere-orchestration

* fix dependency error

* Refactor orchestration-core

* modify sharding-jdbc-orchestration

* modify sharding-proxy-common

* modify proxy-backend&sharding-spring

* polish a checkstyle for xml

* fix parent pom ref

* polish pom referred orchestration

* modify a classname

* refactor projects

* refactor to extract model and configuration

* modify a spelling

* refactor sharding-jdbc-orchestration&sharding-proxy-common

* refactor sharding-jdbc-orchestration-spring

* refactoring orchestration for polishing codes

* Polish codestyle and remove Lists.newArrayList

* fix Arrays.asList can't be added

* rename new orchestration module.

* add blank line.

* modify unit test for new orchestration.

* rename the name of test config center and test registry center.

* Add distributed lock center module

* In distributed lock center module, modify code style.

* Add sharding-orchestration-center.

* modify META-INF.services files in sharding-orchestration-center.

* recovery pom.xml and LeafSegmentKeyGenerator

* modify pom.xml to avoid dependency on sharding-orchestration-core.

* modify LeafSegmentKeyGenerator.

* add sharding-orchestration-core-new module.

* Modify some code in review.