callback testcase extension

also contain small bug fixes for runner callback arg extension

Change-Id: I1287d41dd86a03d5de175b56ba190330e9ce624c
diff --git a/utils/python/controllers/android_device.py b/utils/python/controllers/android_device.py
index b739ac8..289f763 100644
--- a/utils/python/controllers/android_device.py
+++ b/utils/python/controllers/android_device.py
@@ -118,7 +118,7 @@
     for ad in ads:
         running_ads.append(ad)
         try:
-            ad.start_services()
+            ad.startServices()
         except:
             ad.log.exception("Failed to start some services, abort!")
             destroy(running_ads)