On FDE devices, initialize user 0

Fix ugly special cases for user 0: initialize them explicitly.

Bug: 26704408
Change-Id: I1b8536b9e5e87ea98b4009a309f2e22c56006651
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 289bdec..343d316 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -420,6 +420,8 @@
 
     symlink /data/data /data/user/0
 
+    init_user0
+
     # Reload policy from /data/security if present.
     setprop selinux.reload_policy 1