ditsing/ruaft @ abb309cff1ee6ace9019023ab81b61f5b7fc3569

Jing Yang ba5494ad08 Create an abstract layer on top of RPC interfaces for remote peers.		%!s(int64=4) %!d(string=hai) anos
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src	ba5494ad08 Create an abstract layer on top of RPC interfaces for remote peers.	%!s(int64=4) %!d(string=hai) anos
tests	5ae61e09a0 Remove all `external crate`!	%!s(int64=4) %!d(string=hai) anos
Cargo.toml	aae03cec67 Setup test logger in KVServer and tests.	%!s(int64=4) %!d(string=hai) anos