Fix: nacos unit test failed

Ftr: Nearest first for multiple registry

Ftr: Feature/application and service level router

Ftr: dynamic tag router

Rft: Optimize remotes configuration

# Conflicts:
#	common/constant/key.go
#	config/registry_config.go

merge develop

Ftr: dynamic tag router

Fix: can not inovke nacos destroy when graceful shutdown

Fix: zk lost event

Fix k8s ut bug