Rename dumpstate service to include '.example'.

Since it only prints a date.

Bug: 140115084
Test: boot device and check that this can run (as I've also had to
    update file contexts for it)
Change-Id: Id22452cec4f32c2bbfa07065cb5e9c5d2b9936bf
diff --git a/dumpstate/1.0/default/android.hardware.dumpstate@1.0-service.rc b/dumpstate/1.0/default/android.hardware.dumpstate@1.0-service.rc
index 062a291..03298dc 100644
--- a/dumpstate/1.0/default/android.hardware.dumpstate@1.0-service.rc
+++ b/dumpstate/1.0/default/android.hardware.dumpstate@1.0-service.rc
@@ -1,4 +1,4 @@
-service vendor.dumpstate-1-0 /vendor/bin/hw/android.hardware.dumpstate@1.0-service
+service vendor.dumpstate-1-0 /vendor/bin/hw/android.hardware.dumpstate@1.0-service.example
     class hal
     user system
     group system