feat(dubbo/client): 增强client的代码

Fix: After disconnection with ZK registry, cosumer can't listen to provider changes

should return error when `NewURL` failed.

Signed-off-by: imxyb <xyb4638@gmail.com>

Fix: Revert the registryProtocol.GetProtocol() to its original codes

It seems that we can not change the registryProtocol to be singleton. If we do tthat, the listen, speciall zk registry listener doesn't work.

feat(jsonrpc): refactor code

Fix BUG: The SIGSYS and SIGSTOP are not supported in windows platform

Fix BUG:  The generic filter and default reference filters lack ','

Ftr: Gracefully shutdown

Ftr: config center apollo