don't ignore crosvm disk warning and error logs

We were masking warnings that would have saved me time if they weren't
blocked.

Test: adb shell /apex/com.android.virt/bin/vm run-microdroid --protected
Change-Id: Ifaf68c1408d4780a2e100b993b6a34055a71ac31
diff --git a/virtualizationmanager/src/crosvm.rs b/virtualizationmanager/src/crosvm.rs
index b6109c6..c1ac20f 100644
--- a/virtualizationmanager/src/crosvm.rs
+++ b/virtualizationmanager/src/crosvm.rs
@@ -678,7 +678,7 @@
         // Configure the logger for the crosvm process to silence logs from the disk crate which
         // don't provide much information to us (but do spamming us).
         .arg("--log-level")
-        .arg("info,disk=off")
+        .arg("info,disk=warn")
         .arg("run")
         .arg("--disable-sandbox")
         .arg("--cid")