Trigger boot animation on userspace reboot

Also reset some more properties to make bootanimation work properly.

Test: adb reboot userspace
Bug: 148172262
Change-Id: I0154d4fe9377c019150f5b1a709c406925db584d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index e575808..c4f3e15 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -1012,6 +1012,7 @@
   setprop apexd.status ""
   setprop sys.user.0.ce_available ""
   setprop sys.shutdown.requested ""
+  setprop service.bootanim.exit ""
 
 on userspace-reboot-fs-remount
   # Make sure that vold is running.
@@ -1021,6 +1022,7 @@
   exec - system system -- /system/bin/vdc checkpoint resetCheckpoint
   exec - system system -- /system/bin/vdc checkpoint markBootAttempt
   remount_userdata
+  start bootanim
 
 on userspace-reboot-resume
   trigger userspace-reboot-fs-remount