Add the ability to create CloudEndpoint resources using kfctl.

* This is GCP specific code that allows CloudEndpoints to be created using
  the CloudEndpoint controller. A Cloud endpoint is a KRM style resource
  so we can kust have `kfctl apply -f {path}` invoke the appropriate
  logic.

* For GCP this addresses GoogleCloudPlatform/kubeflow-distribution#36; specifically when
  deploying private GKE the CloudEndpoints controller won't be able
  to contact the servicemanagement API. This provides a work around
  by running it locally.

* This pattern seems extensible; i.e. other platforms could link in
  code to handle CR's specific to their platforms. This could basically
  be an alternative to plugins.

* I added a context flag to control the kubecontext that apply applies to.
  Unfortunately, it doesn't look like there is an easy way to use
  that in the context of applying KFDef. It looks like the current logic
  assumes the cluster will be added to the KFDef metadata and then
  look up that cluster in .kubeconfig.

  * Modifying that logic to support the context flag seemed riskier
    then simply adding a comment to the flag.

* Added some warnings that KFUpgrade is deprecated since per kubeflow#304
  we want to follow the off shelf workflow.

cmd/kfctl/cmd/apply.go

@@ -17,6 +17,7 @@ package cmd
 import (
 	"fmt"
 
+	ep "github.com/jlewi/cloud-endpoints-controller/pkg"
 	kftypes "github.com/kubeflow/kfctl/v3/pkg/apis/apps"
 	"github.com/kubeflow/kfctl/v3/pkg/kfapp/coordinator"
 	"github.com/kubeflow/kfctl/v3/pkg/kfupgrade"
@@ -30,6 +31,8 @@ var applyCfg = viper.New()
 var kfApp kftypes.KfApp
 var err error
 
+var kubeContext = ""
+
 // KFDef example configs to be printed out from apply --help
 const (
 	awsConfig      = "https://raw.githubusercontent.com/kubeflow/manifests/v1.0-branch/kfdef/kfctl_aws.v1.0.0.yaml"
@@ -72,6 +75,7 @@ var applyCmd = &cobra.Command{
 			log.Info("Applied the configuration Successfully!")
 			return nil
 		case string(kftypes.KFUPGRADE):
+			log.Warnf("Support for kind %s is deprecated and will be removed in subsequent versions", kftypes.KFUPGRADE)
 			kfUpgrade, err := kfupgrade.NewKfUpgrade(configFilePath)
 			if err != nil {
 				return fmt.Errorf("couldn't load KfUpgrade: %v", err)
@@ -82,6 +86,8 @@ var applyCmd = &cobra.Command{
 				return fmt.Errorf("couldn't apply KfUpgrade: %v", err)
 			}
 			return nil
+		case ep.Kind:
+			return ep.Process(configFilePath, kubeContext)
 		default:
 			return fmt.Errorf("Unsupported object kind: %v", kind)
 		}
@@ -108,6 +114,8 @@ func init() {
 	// verbose output
 	applyCmd.Flags().BoolP(string(kftypes.VERBOSE), "V", false,
 		string(kftypes.VERBOSE)+" output default is false")
+
+	applyCmd.Flags().StringVar(&kubeContext, "context", "", "Optional kubernetes context to use when applying resources. Currently not used by KFDef resources.")
 	bindErr := applyCfg.BindPFlag(string(kftypes.VERBOSE), applyCmd.Flags().Lookup(string(kftypes.VERBOSE)))
 	if bindErr != nil {
 		log.Errorf("Couldn't set flag --%v: %v", string(kftypes.VERBOSE), bindErr)

cmd/kfctl/cmd/build.go

@@ -53,6 +53,7 @@ var buildCmd = &cobra.Command{
 				return fmt.Errorf("failed to build kfApp from URI %s: %v", configFilePath, err)
 			}
 		case string(kftypes.KFUPGRADE):
+			log.Warnf("Support for kind %s is deprecated and will be removed in subsequent versions", kftypes.KFUPGRADE)
 			kfApp, err := kfupgrade.NewKfUpgrade(configFilePath)
 			if err != nil {
 				return fmt.Errorf("couldn't load KfUpgrade: %v", err)

go.mod

@@ -1,7 +1,7 @@
 module github.com/kubeflow/kfctl/v3
 
 require (
-	cloud.google.com/go v0.47.0
+	cloud.google.com/go v0.57.0
 	github.com/Azure/go-autorest v13.3.3+incompatible // indirect
 	github.com/MakeNowJust/heredoc v1.0.0 // indirect
 	github.com/Sirupsen/logrus v0.0.0-00010101000000-000000000000 // indirect
@@ -18,30 +18,31 @@ require (
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/gogo/protobuf v1.3.1
 	github.com/golangplus/testing v0.0.0-20180327235837-af21d9c3145e
-	github.com/google/go-cmp v0.3.1
+	github.com/google/go-cmp v0.4.0
 	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79 // indirect
 	github.com/hashicorp/go-getter v1.0.2
 	github.com/hashicorp/go-version v1.2.0
 	github.com/imdario/mergo v0.3.8
+	github.com/jlewi/cloud-endpoints-controller v0.0.0-20200604211613-aff0aaad5602
 	github.com/kubernetes-sigs/application v0.8.0
-	github.com/onrik/logrus v0.2.1
+	github.com/onrik/logrus v0.5.1
 	github.com/operator-framework/operator-sdk v0.13.0
 	github.com/otiai10/copy v1.0.2
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/common v0.7.0
-	github.com/sirupsen/logrus v1.4.2
+	github.com/sirupsen/logrus v1.6.0
 	github.com/spf13/cobra v1.0.0
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.4.0
 	github.com/tektoncd/pipeline v0.10.1
-	github.com/tidwall/gjson v1.4.0
+	github.com/tidwall/gjson v1.6.0
 	github.com/tidwall/pretty v1.0.1 // indirect
 	go.uber.org/zap v1.12.0 // indirect
 	golang.org/x/crypto v0.0.0
-	golang.org/x/net v0.0.0-20200226121028-0de0cce0169b
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
-	google.golang.org/api v0.10.0
-	google.golang.org/genproto v0.0.0-20191009194640-548a555dbc03
+	golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
+	google.golang.org/api v0.25.0
+	google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84
 	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
 	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
 	gopkg.in/yaml.v2 v2.2.8
@@ -52,7 +53,6 @@ require (
 	k8s.io/client-go v12.0.0+incompatible
 	k8s.io/code-generator v0.18.1 // indirect
 	k8s.io/kubernetes v1.16.2
-	k8s.io/utils v0.0.0-20191030222137-2b95a09bc58d // indirect
 	sigs.k8s.io/controller-runtime v0.4.0
 	sigs.k8s.io/kustomize/v3 v3.2.0
 	sigs.k8s.io/yaml v1.1.0