[CTS] Increase timeout for local hotspot callback

Bug: 162527918
Test: atest WifiManagerTest
Change-Id: I53f006633fe6098e85b3b684bb46c54cb77c3b0e
diff --git a/tests/tests/wifi/src/android/net/wifi/cts/WifiManagerTest.java b/tests/tests/wifi/src/android/net/wifi/cts/WifiManagerTest.java
index 4d4789b..596a8c0 100644
--- a/tests/tests/wifi/src/android/net/wifi/cts/WifiManagerTest.java
+++ b/tests/tests/wifi/src/android/net/wifi/cts/WifiManagerTest.java
@@ -998,8 +998,8 @@
 
             boolean wifiEnabled = mWifiManager.isWifiEnabled();
             mWifiManager.startLocalOnlyHotspot(customConfig, executor, callback);
-            Log.d(TAG, "Sleeping for 2 seconds");
-            Thread.sleep(2000);
+            // now wait for callback
+            Thread.sleep(TEST_WAIT_DURATION_MS);
 
             // Verify callback is run on the supplied executor
             assertFalse(callback.onStartedCalled);