Update k8s libraries to 1.12.3 (#1054)

* Update k8s libraries to 1.12.3

* Update v1beta2 code

* Remove go 1.9 support in travisw

.travis.yml

@@ -1,7 +1,6 @@
 language: go
 
 go:
-  - "1.9"
   - "1.10"
 
 go_import_path: github.com/kubeflow/tf-operator

Gopkg.toml

@@ -31,7 +31,7 @@ required = [
 
 [[constraint]]
   name = "k8s.io/client-go"
-  version = "kubernetes-1.11.2"
+  version = "kubernetes-1.12.3"
 
 [[constraint]]
   # kube-openapi does not have any version.
@@ -40,23 +40,19 @@ required = [
 
 [[constraint]]
   name = "k8s.io/kubernetes"
-  version = "v1.11.2"
+  version = "v1.12.3"
 
 [[constraint]]
   name = "k8s.io/api"
-  version = "kubernetes-1.11.2"
+  version = "kubernetes-1.12.3"
 
 [[constraint]]
   name = "k8s.io/apimachinery"
-  version = "kubernetes-1.11.2"
-
-[[constraint]]
-  name = "k8s.io/apiextensions-apiserver"
-  version = "kubernetes-1.11.2"
+  version = "kubernetes-1.12.3"
 
 [[constraint]]
   name = "k8s.io/code-generator"
-  version = "kubernetes-1.11.2"
+  version = "kubernetes-1.12.3"
 
 [[constraint]]
   name = "github.com/prometheus/client_golang"
@@ -85,7 +81,7 @@ required = [
 
 [[override]]
   name = "k8s.io/apiserver"
-  version = "kubernetes-1.11.2"
+  version = "kubernetes-1.12.3"
 
 [prune]
   go-tests = true

cmd/tf-operator.v1/app/server.go

@@ -15,6 +15,7 @@
 package app
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"time"
@@ -127,7 +128,7 @@ func Run(opt *options.ServerOption) error {
 	go unstructuredInformer.Informer().Run(stopCh)
 
 	// Set leader election start function.
-	run := func(<-chan struct{}) {
+	run := func(context.Context) {
 		isLeader.Set(1)
 		if err := tc.Run(opt.Threadiness, stopCh); err != nil {
 			log.Errorf("Failed to run the controller: %v", err)
@@ -161,7 +162,7 @@ func Run(opt *options.ServerOption) error {
 	}
 
 	// Start leader election.
-	election.RunOrDie(election.LeaderElectionConfig{
+	election.RunOrDie(context.TODO(), election.LeaderElectionConfig{
 		Lock:          rl,
 		LeaseDuration: leaseDuration,
 		RenewDeadline: renewDuration,

cmd/tf-operator.v1beta2/app/server.go

@@ -15,6 +15,7 @@
 package app
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"time"
@@ -118,7 +119,7 @@ func Run(opt *options.ServerOption) error {
 	go unstructuredInformer.Informer().Run(stopCh)
 
 	// Set leader election start function.
-	run := func(<-chan struct{}) {
+	run := func(context.Context) {
 		if err := tc.Run(opt.Threadiness, stopCh); err != nil {
 			log.Errorf("Failed to run the controller: %v", err)
 		}
@@ -149,7 +150,7 @@ func Run(opt *options.ServerOption) error {
 	}
 
 	// Start leader election.
-	election.RunOrDie(election.LeaderElectionConfig{
+	election.RunOrDie(context.TODO(), election.LeaderElectionConfig{
 		Lock:          rl,
 		LeaseDuration: leaseDuration,
 		RenewDeadline: renewDuration,