Convert List query parameters via object conversion

Convert url.Values -> an object, with appropriate versioning. ListOptions
should also expose parameter names to swagger.

pkg/api/conversion.go

@@ -19,6 +19,8 @@ package api
 import (
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/api/resource"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/conversion"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
 )
@@ -28,12 +30,48 @@ import (
 var Codec = runtime.CodecFor(Scheme, "")
 
 func init() {
+	Scheme.AddDefaultingFuncs(
+		func(obj *ListOptions) {
+			obj.LabelSelector = labels.Everything()
+			obj.FieldSelector = fields.Everything()
+		},
+	)
 	Scheme.AddConversionFuncs(
 		func(in *util.Time, out *util.Time, s conversion.Scope) error {
 			// Cannot deep copy these, because time.Time has unexported fields.
 			*out = *in
 			return nil
 		},
+		func(in *string, out *labels.Selector, s conversion.Scope) error {
+			selector, err := labels.Parse(*in)
+			if err != nil {
+				return err
+			}
+			*out = selector
+			return nil
+		},
+		func(in *string, out *fields.Selector, s conversion.Scope) error {
+			selector, err := fields.ParseSelector(*in)
+			if err != nil {
+				return err
+			}
+			*out = selector
+			return nil
+		},
+		func(in *labels.Selector, out *string, s conversion.Scope) error {
+			if *in == nil {
+				return nil
+			}
+			*out = (*in).String()
+			return nil
+		},
+		func(in *fields.Selector, out *string, s conversion.Scope) error {
+			if *in == nil {
+				return nil
+			}
+			*out = (*in).String()
+			return nil
+		},
 		func(in *resource.Quantity, out *resource.Quantity, s conversion.Scope) error {
 			// Cannot deep copy these, because inf.Dec has unexported fields.
 			*out = *in.Copy()