Enable all client-go auth plugins

This brings in auth plugins for Azure, OpenStack, OpenID connect...
NB: fixing the Azure/go-autorest dep to v9.10.0, since newer (v10+)
releases aren't compatible with client-go (v7.0.0) anymore.

glide.yaml

@@ -5,6 +5,8 @@ import:
   subpackages:
   - kubernetes
   - plugin/pkg/client/auth/gcp
+  - plugin/pkg/client/auth/azure
+  - plugin/pkg/client/auth/oidc
   - rest
   - tools/clientcmd
   - tools/cache
@@ -37,3 +39,5 @@ import:
   version: ^1.0.0
 - package: github.com/spf13/afero
   version: ^1.1.0
+- package: github.com/Azure/go-autorest
+  version: v9.10.0

pkg/client/client.go

@@ -10,8 +10,8 @@ import (
 	"k8s.io/client-go/tools/clientcmd"
 	"k8s.io/client-go/util/homedir"
 
-	// Ensure we have GCP auth method linked in
-	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
+	// Ensure we have auth plugins (gcp, azure, openstack, ...) linked in
+	_ "k8s.io/client-go/plugin/pkg/client/auth"
 )
 
 // NewRestConfig create a *rest.Config, trying to mimic kubectl behavior: