microdroid_manager prints to kmsg

Until we import kernlog, use stdio_to_kmsg as a workaround.

Bug: 189805435
Test: Follow microdroid/README.md
      see the microdroid_manager's log messages
Change-Id: I0b178f8fe0751b536253a31c2fc322dc2db51b90
diff --git a/microdroid_manager/microdroid_manager.rc b/microdroid_manager/microdroid_manager.rc
index c800002..4f194a3 100644
--- a/microdroid_manager/microdroid_manager.rc
+++ b/microdroid_manager/microdroid_manager.rc
@@ -1,4 +1,7 @@
 service microdroid_manager /system/bin/microdroid_manager
     disabled
+    # TODO(b/189805435) for now redirect stdio to kmsg
+    stdio_to_kmsg
+    setenv RUST_LOG info
     # TODO(jooyung) remove this when microdroid_manager becomes a daemon
     oneshot
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