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: Ia921ae611a31eff6242a81382e6610884ad70f2c
diff --git a/tests/helper/Android.bp b/tests/helper/Android.bp
index 41d1ba2..1c38d12 100644
--- a/tests/helper/Android.bp
+++ b/tests/helper/Android.bp
@@ -33,4 +33,5 @@
     ],
     host_supported: true,
     device_supported: false,
+    sdk_version: "test_current",
 }