update to go 1.13 since k8s requires 1.13

Author: Jefftree

artifacts/images/agent-build.Dockerfile

@@ -1,5 +1,5 @@
 # Build the proxy-agent binary
-FROM golang:1.12.1 as builder
+FROM golang:1.13.4 as builder
 
 # Copy in the go src
 WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
@@ -9,7 +9,6 @@ COPY go.mod go.mod
 COPY go.sum go.sum
 
 # Cache dependencies
-ENV GO111MODULE=on
 RUN go mod download
 
 # Copy the sources

artifacts/images/client-build.Dockerfile

@@ -1,5 +1,5 @@
 # Build the client binary
-FROM golang:1.12.1 as builder
+FROM golang:1.13.4 as builder
 
 # Copy in the go src
 WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
@@ -9,7 +9,6 @@ COPY go.mod go.mod
 COPY go.sum go.sum
 
 # Cache dependencies
-ENV GO111MODULE=on
 RUN go mod download
 
 # Copy the sources

artifacts/images/server-build.Dockerfile

@@ -1,5 +1,5 @@
 # Build the proxy-server binary
-FROM golang:1.12.1 as builder
+FROM golang:1.13.4 as builder
 
 # Copy in the go src
 WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
@@ -9,7 +9,6 @@ COPY go.mod go.mod
 COPY go.sum go.sum
 
 # Cache dependencies
-ENV GO111MODULE=on
 RUN go mod download
 
 # Copy the sources

go.mod

@@ -4,7 +4,6 @@ go 1.12
 
 require (
 	github.com/beorn7/perks v1.0.0 // indirect
-	github.com/golang/lint v0.0.0-20180702182130-06c8688daad7 // indirect
 	github.com/golang/protobuf v1.3.2
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/prometheus/client_golang v0.9.2

go.sum

@@ -16,7 +16,6 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -38,8 +37,6 @@ github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
 github.com/prometheus/client_golang v0.9.2 h1:awm861/B8OKDd2I/6o1dy3ra4BamzKhYOiGItCeZ740=
 github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
-github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 h1:S/YWwWx/RA8rT8tKFRuGUZhuA90OyIBpPCXkcbwU8DE=
-github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 h1:gQz4mCbXsO+nc9n1hCxHcGA3Zx3Eo+UHZoInFGUIXNM=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=