Merge branch 'develop' into 'master'

documentation/design/04-conceptual-design.md

documentation/design/05-implementation.md

forks/goarista/gnmi/arbitration.go

forks/goarista/gnmi/arbitration_test.go

forks/goarista/gnmi/client.go

forks/goarista/gnmi/json.go

forks/goarista/gnmi/operation.go

forks/goarista/gnmi/operation_test.go

forks/goarista/gnmi/path.go

forks/goarista/gnmi/path_test.go

forks/google/gnmi/model.go

forks/google/gnmi/server.go

forks/google/gnmi/server_test.go

forks/google/gnmi/util.go

go.mod

go.sum

gosdn-cli/gosdn-cli.go

gosdn.png

gosdn.puml

gosdn.toml