Use file tags to generate conversions

This drives conversion generation from file tags like:
  // +conversion-gen=k8s.io/my/internal/version
.. rather than hardcoded lists of packages.

The only net change in generated code can be explained as correct.  Previously
it didn't know that conversion was available.

pkg/apis/extensions/v1beta1/conversion_generated.go

@@ -62,6 +62,8 @@ func init() {
 		Convert_extensions_DeploymentStatus_To_v1beta1_DeploymentStatus,
 		Convert_v1beta1_DeploymentStrategy_To_extensions_DeploymentStrategy,
 		Convert_extensions_DeploymentStrategy_To_v1beta1_DeploymentStrategy,
+		Convert_v1beta1_ExportOptions_To_api_ExportOptions,
+		Convert_api_ExportOptions_To_v1beta1_ExportOptions,
 		Convert_v1beta1_FSGroupStrategyOptions_To_extensions_FSGroupStrategyOptions,
 		Convert_extensions_FSGroupStrategyOptions_To_v1beta1_FSGroupStrategyOptions,
 		Convert_v1beta1_HTTPIngressPath_To_extensions_HTTPIngressPath,
@@ -110,6 +112,8 @@ func init() {
 		Convert_unversioned_LabelSelector_To_v1beta1_LabelSelector,
 		Convert_v1beta1_LabelSelectorRequirement_To_unversioned_LabelSelectorRequirement,
 		Convert_unversioned_LabelSelectorRequirement_To_v1beta1_LabelSelectorRequirement,
+		Convert_v1beta1_ListOptions_To_api_ListOptions,
+		Convert_api_ListOptions_To_v1beta1_ListOptions,
 		Convert_v1beta1_NetworkPolicy_To_extensions_NetworkPolicy,
 		Convert_extensions_NetworkPolicy_To_v1beta1_NetworkPolicy,
 		Convert_v1beta1_NetworkPolicyIngressRule_To_extensions_NetworkPolicyIngressRule,
@@ -644,6 +648,32 @@ func autoConvert_extensions_DeploymentStrategy_To_v1beta1_DeploymentStrategy(in
 	return nil
 }
 
+func autoConvert_v1beta1_ExportOptions_To_api_ExportOptions(in *ExportOptions, out *api.ExportOptions, s conversion.Scope) error {
+	if err := api.Convert_unversioned_TypeMeta_To_unversioned_TypeMeta(&in.TypeMeta, &out.TypeMeta, s); err != nil {
+		return err
+	}
+	out.Export = in.Export
+	out.Exact = in.Exact
+	return nil
+}
+
+func Convert_v1beta1_ExportOptions_To_api_ExportOptions(in *ExportOptions, out *api.ExportOptions, s conversion.Scope) error {
+	return autoConvert_v1beta1_ExportOptions_To_api_ExportOptions(in, out, s)
+}
+
+func autoConvert_api_ExportOptions_To_v1beta1_ExportOptions(in *api.ExportOptions, out *ExportOptions, s conversion.Scope) error {
+	if err := api.Convert_unversioned_TypeMeta_To_unversioned_TypeMeta(&in.TypeMeta, &out.TypeMeta, s); err != nil {
+		return err
+	}
+	out.Export = in.Export
+	out.Exact = in.Exact
+	return nil
+}
+
+func Convert_api_ExportOptions_To_v1beta1_ExportOptions(in *api.ExportOptions, out *ExportOptions, s conversion.Scope) error {
+	return autoConvert_api_ExportOptions_To_v1beta1_ExportOptions(in, out, s)
+}
+
 func autoConvert_v1beta1_FSGroupStrategyOptions_To_extensions_FSGroupStrategyOptions(in *FSGroupStrategyOptions, out *extensions.FSGroupStrategyOptions, s conversion.Scope) error {
 	out.Rule = extensions.FSGroupStrategyType(in.Rule)
 	if in.Ranges != nil {
@@ -1440,6 +1470,46 @@ func Convert_unversioned_LabelSelectorRequirement_To_v1beta1_LabelSelectorRequir
 	return autoConvert_unversioned_LabelSelectorRequirement_To_v1beta1_LabelSelectorRequirement(in, out, s)
 }
 
+func autoConvert_v1beta1_ListOptions_To_api_ListOptions(in *ListOptions, out *api.ListOptions, s conversion.Scope) error {
+	if err := api.Convert_unversioned_TypeMeta_To_unversioned_TypeMeta(&in.TypeMeta, &out.TypeMeta, s); err != nil {
+		return err
+	}
+	if err := api.Convert_string_To_labels_Selector(&in.LabelSelector, &out.LabelSelector, s); err != nil {
+		return err
+	}
+	if err := api.Convert_string_To_fields_Selector(&in.FieldSelector, &out.FieldSelector, s); err != nil {
+		return err
+	}
+	out.Watch = in.Watch
+	out.ResourceVersion = in.ResourceVersion
+	out.TimeoutSeconds = in.TimeoutSeconds
+	return nil
+}
+
+func Convert_v1beta1_ListOptions_To_api_ListOptions(in *ListOptions, out *api.ListOptions, s conversion.Scope) error {
+	return autoConvert_v1beta1_ListOptions_To_api_ListOptions(in, out, s)
+}
+
+func autoConvert_api_ListOptions_To_v1beta1_ListOptions(in *api.ListOptions, out *ListOptions, s conversion.Scope) error {
+	if err := api.Convert_unversioned_TypeMeta_To_unversioned_TypeMeta(&in.TypeMeta, &out.TypeMeta, s); err != nil {
+		return err
+	}
+	if err := api.Convert_labels_Selector_To_string(&in.LabelSelector, &out.LabelSelector, s); err != nil {
+		return err
+	}
+	if err := api.Convert_fields_Selector_To_string(&in.FieldSelector, &out.FieldSelector, s); err != nil {
+		return err
+	}
+	out.Watch = in.Watch
+	out.ResourceVersion = in.ResourceVersion
+	out.TimeoutSeconds = in.TimeoutSeconds
+	return nil
+}
+
+func Convert_api_ListOptions_To_v1beta1_ListOptions(in *api.ListOptions, out *ListOptions, s conversion.Scope) error {
+	return autoConvert_api_ListOptions_To_v1beta1_ListOptions(in, out, s)
+}
+
 func autoConvert_v1beta1_NetworkPolicy_To_extensions_NetworkPolicy(in *NetworkPolicy, out *extensions.NetworkPolicy, s conversion.Scope) error {
 	SetDefaults_NetworkPolicy(in)
 	if err := api.Convert_unversioned_TypeMeta_To_unversioned_TypeMeta(&in.TypeMeta, &out.TypeMeta, s); err != nil {

pkg/apis/extensions/v1beta1/doc.go

@@ -15,6 +15,8 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package,register
+// +k8s:conversion-gen=k8s.io/kubernetes/pkg/apis/extensions
+// +k8s:conversion-gen=k8s.io/kubernetes/pkg/apis/autoscaling
+// +k8s:conversion-gen=k8s.io/kubernetes/pkg/apis/batch
 
-// +genconversion=true
 package v1beta1