Allow connectivity tests to use hidden APIs

The tests have been building against hidden APIs to provide additional
coverage.

Test: m TetheringCoverageTests CtsNetTestCases
Bug: 182859030
Ignore-AOSP-First: needs manual cherry-picks
Change-Id: I37d748411a34f25834214a2412c49aed1423e526
diff --git a/tests/cts/net/Android.bp b/tests/cts/net/Android.bp
index cd69b13..25596a9 100644
--- a/tests/cts/net/Android.bp
+++ b/tests/cts/net/Android.bp
@@ -18,7 +18,10 @@
 
 java_defaults {
     name: "CtsNetTestCasesDefaults",
-    defaults: ["cts_defaults"],
+    defaults: [
+        "cts_defaults",
+        "framework-connectivity-test-defaults",
+    ],
 
     // Include both the 32 and 64 bit versions
     compile_multilib: "both",