Add RECEIVER_EXPORTED flag to NetworkStack API Shims

Android T adds support to allow a runtime receiver to be registered as
not exported, but to ensure apps can take advantage of this, calls to
registerReceiver must specify a flag indicating whether the receiver
should be exported for apps targeting T+ that are registering for
non-system broadcasts. This commit adds the RECEIVER_EXPORTED
flag to the API shims for code or tests that require exporting
a dynamic receiver.

Bug: 217654947
Test: atest HostsideRestrictBackgroundNetworkTests#testAppIdle_toast
Change-Id: Ic7e621646db3b703bed905f01bbcf3adf22f5523
diff --git a/Android.bp b/Android.bp
index cfe9353..8faae86 100644
--- a/Android.bp
+++ b/Android.bp
@@ -220,8 +220,7 @@
         "//packages/modules/Connectivity/Tethering",
         "//packages/modules/Connectivity/service",
         "//packages/modules/Connectivity/service-t",
-        "//packages/modules/Connectivity/tests/cts/net",
-        "//packages/modules/Connectivity/tests/cts/hostside/app",
+        "//packages/modules/Connectivity/tests/cts:__subpackages__",
     ],
 }