Don't send empty auth data
diff --git a/_modules/jenkins_common.py b/_modules/jenkins_common.py
index c7446fa..348aa09 100644
--- a/_modules/jenkins_common.py
+++ b/_modules/jenkins_common.py
@@ -69,7 +69,7 @@
logger.debug("Calling Jenkins script API with URL: %s", jenkins_url)
req = requests.post('%s/scriptText' % jenkins_url,
- auth=(jenkins_user, jenkins_password),
+ auth=(jenkins_user, jenkins_password) if jenkins_user else None,
data=req_data)
ret["code"] = req.status_code
ret["msg"] = req.text