Update a test expectation.

By adding various "new" (Linux 2.6+) fallocate flags to our glibc
headers, we've enabled various bits of new functionality in fs
generation tools such as mke2fs, causing differences in expectations.

Change-Id: Ia7887f09c3f57aacb7ae62be336a26d7946b2d7c
diff --git a/libs/apexutil/src/lib.rs b/libs/apexutil/src/lib.rs
index 639135f..9ae5f2b 100644
--- a/libs/apexutil/src/lib.rs
+++ b/libs/apexutil/src/lib.rs
@@ -179,7 +179,7 @@
         // The expected hex values were generated when we ran the method the first time.
         assert_eq!(
             hex::encode(res.root_digest),
-            "54265da77ae1fd619e39809ad99fedc576bb20c0c7a8002190fa64438436299f"
+            "0cdeee606f2c9b468900e07d306384605684e6ca0b8bc6c51592808de9fd1c44"
         );
         assert_eq!(
             hex::encode(res.public_key),