Set adb listening address

Without this property, adbd tries to listen tcp:5555, which is
unnecessary for microdroid.

Bug: 193118220
Test: atest MicrodroidHostTestCases
Test: connect to microdroid and see logcat
Change-Id: I7cd81d63e3b141c4c34eef502cab3566e8d071cb
diff --git a/microdroid/build.prop b/microdroid/build.prop
index b7f3510..eaca63d 100644
--- a/microdroid/build.prop
+++ b/microdroid/build.prop
@@ -2,6 +2,7 @@
 ro.apex.updatable=true
 ro.debuggable=1
 ro.adb.secure=0
+service.adb.listen_addrs=vsock:5555
 
 # TODO(b/189164487): support build related properties
 ro.build.version.release=11