Move utilities to libs/net

The libs directory is a much more suitable home for these files.

Test: checkbuild
Change-Id: Icbe7e53b1858188bf65c55cb53f7a111d594f5af
diff --git a/Android.bp b/Android.bp
index ae25f17..cdda32a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -95,6 +95,7 @@
         "datastallprotosnano",
         "statsprotos",
         "captiveportal-lib",
+        "net-utils-device-common",
     ],
     plugins: ["java_api_finder"],
 }