Simplify registry data and add a new service data store seperated from registry #2030

[cvictory]

What is the purpose of the change

For issue: #2030

URL works as the carrier for Dubbo internal data transfer at runtime, and is also works as a protocol integrating with the external system: registration center, service query, service management, etc., resulting in serious coupling between the configuration and the registration center, and the data load pushed by the registration center is too large.

Keep URL unchanged at runtime, and even enrich the runtime URL; Keep the immutability of the URL during a single invoke from start to end.
Simplify Registry url as much as possible.
Refactor the way of doing service configuration, rely on Registry currently, switch to third-party Config Center while keeping compatible with old Overrides protocol.
Some data in URL are for service query purpose, we should register this part to another place instead of Registry. And it should be realized as extensible and users can decide to enable it or not.

Brief changelog

• Add unit test
• Simplify the class info and store metadata into servicestore

Verifying this change

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