Fix path related bugs

[chickenlj]

What is the purpose of the change

Fixes #3478, #3477 and #3445

Reviewed the usage of path and interface name, it's still mix used in some workflows but at least this patch can make it work.

Brief changelog

RestProtocol
RegistryProtocol
ServiceConfig

Verifying this change

XXXXX

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[cvictory]

It work well.