Update utils.py to check for build-tools version 32

Change-Id: If4d61114f4ed38d995eb0e002df138e75abee581
diff --git a/tools/utils.py b/tools/utils.py
index c5fb4ce..5cb2cbe 100644
--- a/tools/utils.py
+++ b/tools/utils.py
@@ -181,7 +181,7 @@
     assert os.path.exists(build_tools_dir)
     return build_tools_dir
   else:
-    versions = ['30.0.3', '30.0.2', '30.0.1', '30.0.0']
+    versions = ['33.0.1', '32.0.0']
     for version in versions:
       build_tools_dir = os.path.join(getAndroidHome(), 'build-tools', version)
       if os.path.exists(build_tools_dir):