Add missing import.

R=ricow@google.com

Change-Id: I7292bcd3241554acd022fbf69e6b4352795e291c
diff --git a/tools/create_maven_release.py b/tools/create_maven_release.py
index acb37a8..85b558a 100755
--- a/tools/create_maven_release.py
+++ b/tools/create_maven_release.py
@@ -12,6 +12,7 @@
 import sys
 from string import Template
 import tempfile
+import utils
 
 LICENSETEMPLATE = Template(
 """