Merge changes from topic "connectivitymanager-blockedreason-shim"

* changes:
  Fix CtsNetTestCasesLatestSdk in AOSP.
  Use the non-API static UserHandle.getUid method in tests.
  Import ConnectivityManager.BLOCKED_REASON_* from ConstantsShim.
diff --git a/Tethering/proguard.flags b/Tethering/proguard.flags
index 9ab56c2..75ecdce 100644
--- a/Tethering/proguard.flags
+++ b/Tethering/proguard.flags
@@ -9,7 +9,7 @@
 }
 
 -keepclassmembers public class * extends com.android.networkstack.tethering.util.Struct {
-    public <init>(...);
+    *;
 }
 
 -keepclassmembers class android.net.ip.IpServer {