Print python version when running on the bots

Change-Id: I4e2406a7cd98678f30023ea813e9670e77610541
diff --git a/tools/test.py b/tools/test.py
index 56f30e7..0efa683 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -219,6 +219,7 @@
 
   if utils.is_bot():
     gradle.RunGradle(['--no-daemon', 'clean'])
+    print('Running with python ' + str(sys.version_info))
 
   desugar_jdk_json_dir = None
   if options.desugared_library_configuration: