Use module_current in NetworkStackDevApiLevel

Module should use module_current to access module_lib APIs.
Update it from system_current to module_current and add the libs
dependencies accordingly.

Test: m ; atest FrameworksNetTest
Change-Id: Icd69016029299054a0f84655311ae275327805fa
diff --git a/Android.bp b/Android.bp
index 6ddab41..36ea5de 100644
--- a/Android.bp
+++ b/Android.bp
@@ -61,7 +61,13 @@
 java_defaults {
     name: "NetworkStackDevApiLevel",
     min_sdk_version: "29",
-    sdk_version: "system_current",
+    sdk_version: "module_current",
+    libs: [
+        "framework-connectivity",
+        "framework-connectivity-t.stubs.module_lib",
+        "framework-statsd",
+        "framework-wifi",
+    ]
 }
 
 java_defaults {