Data call establish time is related to network condition which can’t be controlled by the device.

Extend the time limitation to 30 seconds to cover most of the cases.

Change-Id: I522f7eb23baa9a652fb3fd633d200cd6307180c8

tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java

@@ -287,7 +287,7 @@ public class ConnectivityManagerTest extends AndroidTestCase {
         }
 
         public boolean waitForConnection() throws InterruptedException {
-            return mReceiveLatch.await(10, TimeUnit.SECONDS);
+            return mReceiveLatch.await(30, TimeUnit.SECONDS);
         }
     }
 }