Fix key increment verification. Since CL:459837, bootok is moved to
chromeos-setgoodfirmware.

BUG=None

TEST=Key Increment test

Change-Id: I5ca6e0dbcc6aae0e052482cc5596570dbef67bd9
Reviewed-on: https://chromium-review.googlesource.com/569061
Commit-Ready: Venkata Srinivasa Raju Penmetcha <venkataraju@chromium.org>
Tested-by: Venkata Srinivasa Raju Penmetcha <venkataraju@chromium.org>
Reviewed-by: Kevin Shelton <kmshelton@chromium.org>
diff --git a/provingground/firmware/keyinc_setup.sh b/provingground/firmware/keyinc_setup.sh
index 9e44cfb..fac079c 100755
--- a/provingground/firmware/keyinc_setup.sh
+++ b/provingground/firmware/keyinc_setup.sh
@@ -414,7 +414,7 @@
     crossystem_verification $auto_update
     sleep 60
 
-    ssh root@$DUT_IP "grep completed /var/log/update_engine.log"
+    ssh root@$DUT_IP "grep '$SUCCESSFUL_UPDATE_TOKEN' $UPDATE_ENGINE_LOG"
 
     if [ $? -ne 0 ]; then
       log Autoupdate Verification Failed on AU$auto_update after reboot
@@ -554,6 +554,9 @@
 FINAL_CONFIG="autoupdate-ascii-chromeos-$BOARD.config"
 GOOGLEDATA="/google/data/rw/users/$(cut -c1-2 <<<$USER)/$USER/www"
 
+UPDATE_ENGINE_LOG="/var/log/update_engine.log"
+SUCCESSFUL_UPDATE_TOKEN="firmware set as good firmware"
+
 if [ "$FUNC" = "ALL" ]; then
   generate_payload
   upload_payload