Add sdk_version property to cts tests

This change specifies the sdk_version property to the cts test modules
so that the test modules do not depend on the framework, and utilize the
test api instead.

Test: TH
Bug: 345499522
Change-Id: I876fb8681dadad9d123bedb38d67c1a31b0f3a54
diff --git a/tests/cts/net/Android.bp b/tests/cts/net/Android.bp
index 768ba12..ae85701 100644
--- a/tests/cts/net/Android.bp
+++ b/tests/cts/net/Android.bp
@@ -180,4 +180,5 @@
         "cts",
         "general-tests",
     ],
+    sdk_version: "test_current",
 }