Don't use gradle daemon on the bots

Bug: 124643718
Change-Id: If131bddcdb44d31648d477d1db4f717ae77b8132
diff --git a/tools/test.py b/tools/test.py
index 06aefca..899337a 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -141,9 +141,13 @@
 def Main():
   (options, args) = ParseOptions()
   if utils.is_bot():
-    gradle.RunGradle(['clean'])
+    gradle.RunGradle(['--no-daemon', 'clean'])
 
   gradle_args = ['--stacktrace']
+  if utils.is_bot():
+    # Bots don't like dangling processes
+    gradle_args.append('--no-daemon')
+
   # Set all necessary Gradle properties and options first.
   if options.shard_count:
     assert options.shard_number