*: abstractions and ImageService

plus some fix here and there

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

server/image.go

@@ -0,0 +1,26 @@
+package server
+
+import (
+	pb "github.com/kubernetes/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
+	"golang.org/x/net/context"
+)
+
+// ListImages lists existing images.
+func (s *Server) ListImages(ctx context.Context, req *pb.ListImagesRequest) (*pb.ListImagesResponse, error) {
+	return nil, nil
+}
+
+// ImageStatus returns the status of the image.
+func (s *Server) ImageStatus(ctx context.Context, req *pb.ImageStatusRequest) (*pb.ImageStatusResponse, error) {
+	return nil, nil
+}
+
+// PullImage pulls a image with authentication config.
+func (s *Server) PullImage(ctx context.Context, req *pb.PullImageRequest) (*pb.PullImageResponse, error) {
+	return nil, nil
+}
+
+// RemoveImage removes the image.
+func (s *Server) RemoveImage(ctx context.Context, req *pb.RemoveImageRequest) (*pb.RemoveImageResponse, error) {
+	return nil, nil
+}