Add aiy-board-keyring to manifest

Change-Id: Ia024326352c3a4a26f662f8c800be96485e49fd3
diff --git a/default.xml b/default.xml
index 5e45f86..f26c89a 100644
--- a/default.xml
+++ b/default.xml
@@ -39,6 +39,7 @@
     <project path="tools/img2simg" name="img2simg" />
 
     <project path="packages/aiy-board-audio" name="aiy-board-audio" />
+    <project path="packages/aiy-board-keyring" name="aiy-board-keyring" />
     <project path="packages/aiy-board-wlan" name="aiy-board-wlan" />
 
     <project path="wayland-protocols-imx" name="wayland-protocols-imx" groups="notdefault,imx" />