Add visibility of framework-connectivity.impl for wifi test

Add visibility to allow FrameworksWifiTests to access hidden
connectivity APIs.

Bug: 171540887
Test: m FrameworksWifiTests
Change-Id: I3cd377d7045e7e161d0813aa2d614dff1b5a311b
diff --git a/framework/Android.bp b/framework/Android.bp
index 609455f..90b8d03 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -131,6 +131,7 @@
         "//packages/modules/Connectivity/Tethering/tests:__subpackages__",
         "//packages/modules/Connectivity/tests:__subpackages__",
         "//packages/modules/NetworkStack/tests:__subpackages__",
+        "//packages/modules/Wifi/service/tests/wifitests",
     ],
     apex_available: [
         "com.android.tethering",