Use cached state instead of runc state.

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/process/deleted_state.go

@@ -69,3 +69,7 @@ func (s *deletedState) SetExited(status int) {
 func (s *deletedState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
 	return nil, errors.Errorf("cannot exec in a deleted state")
 }
+
+func (s *deletedState) Status(ctx context.Context) (string, error) {
+	return "stopped", nil
+}