Add an option to install wifiutil apk from a different location

b/64280295

Test: Local TF run
Change-Id: Ic2208a2401b129867ebad4ff7e1a4782eb2ef409
diff --git a/src/com/android/tradefed/device/TestDevice.java b/src/com/android/tradefed/device/TestDevice.java
index 066ef12..dd9beca 100644
--- a/src/com/android/tradefed/device/TestDevice.java
+++ b/src/com/android/tradefed/device/TestDevice.java
@@ -1145,7 +1145,7 @@
      */
     @Override
     IWifiHelper createWifiHelper() throws DeviceNotAvailableException {
-        return new WifiHelper(this);
+        return new WifiHelper(this, mOptions.getWifiUtilAPKPath());
     }
 
     /** {@inheritDoc} */