bootstat: fix test regression (extra logging)

Deal with regression from 9a3870490a005ac73dc1e2be202e0824cc239e43
where additional content is logged and should be ignored.

Test: system/core/bootstat/boot_reason_test.sh
Bug: 63736262
Change-Id: I70709ba5b00ea18a653ff8d1658556b7d4c48775
diff --git a/bootstat/boot_reason_test.sh b/bootstat/boot_reason_test.sh
index 209e81b..85c85f3 100755
--- a/bootstat/boot_reason_test.sh
+++ b/bootstat/boot_reason_test.sh
@@ -287,6 +287,7 @@
 bootstat: Battery level at shutdown 100%
 bootstat: Battery level at startup 100%
 init    : Parsing file /system/etc/init/bootstat.rc...
+init    : Parsing file /system/etc/init/bootstat-debug.rc...
 init    : processing action (persist.test.boot.reason=*) from (/system/etc/init/bootstat-debug.rc:
 init    : Command 'setprop ro.boot.bootreason \${persist.test.boot.reason}' action=persist.test.boot.reason=* (/system/etc/init/bootstat-debug.rc:
 init    : processing action (post-fs-data) from (/system/etc/init/bootstat.rc