chore: tidy dependency

api/go.mod

@@ -9,7 +9,6 @@ replace github.com/coreos/bbolt => go.etcd.io/bbolt v1.3.5
 require (
 	github.com/coreos/bbolt v1.3.2 // indirect
 	github.com/coreos/etcd v3.3.25+incompatible // indirect
-	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
 	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
@@ -19,12 +18,9 @@ require (
 	github.com/gin-contrib/pprof v1.3.0
 	github.com/gin-contrib/static v0.0.0-20200916080430-d45d9a37d28e
 	github.com/gin-gonic/gin v1.6.3
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
 	github.com/google/uuid v1.1.2 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.2.2 // indirect
-	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
 	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/prometheus/client_golang v1.8.0 // indirect
 	github.com/satori/go.uuid v1.2.0
@@ -33,16 +29,15 @@ require (
 	github.com/sirupsen/logrus v1.7.0 // indirect
 	github.com/sony/sonyflake v1.0.0
 	github.com/spf13/cobra v0.0.3
-	github.com/spf13/pflag v1.0.3 // indirect
-	github.com/stretchr/testify v1.6.1
+	github.com/spf13/viper v1.8.0
+	github.com/stretchr/testify v1.7.0
 	github.com/takama/daemon v1.0.0
 	github.com/tidwall/gjson v1.6.7
 	github.com/tmc/grpc-websocket-proxy v0.0.0-20200427203606-3cfed13b9966 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0
 	github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da
 	go.etcd.io/etcd v3.3.25+incompatible
-	go.uber.org/zap v1.16.0
+	go.uber.org/zap v1.17.0
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324 // indirect
-	gopkg.in/yaml.v2 v2.3.0
 	sigs.k8s.io/yaml v1.2.0 // indirect
 )