mkdir /metadata/sepolicy

Test: make -j; launch_cvd; adb shell ls -laZ /metadata/sepolicy
Bug: 199914227
Change-Id: I005d3eee0e047da9a7f671e87a0274fedaf59447
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 27fa059..2589619 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -583,6 +583,7 @@
     restorecon_recursive /metadata/apex
 
     mkdir /metadata/staged-install 0770 root system
+    mkdir /metadata/sepolicy 0700 root root
 on late-fs
     # Ensure that tracefs has the correct permissions.
     # This does not work correctly if it is called in post-fs.