Add libstatssocket_test to TEST_MAPPING

Test: treehugger
Change-Id: Iddff5df4c498bf7c93e57b1ae214f813920243e1
diff --git a/libstats/socket/Android.bp b/libstats/socket/Android.bp
index 9fd9fbc..8a43d85 100644
--- a/libstats/socket/Android.bp
+++ b/libstats/socket/Android.bp
@@ -92,5 +92,5 @@
         "liblog",
         "libutils",
     ],
-    test_suites: ["device_tests"],
+    test_suites: ["device-tests"],
 }