Fixed Jenkins SMTP reply to address passing

Change-Id: I71008e0b512dad3b4d1c0f562e3907d7e8d4662b
diff --git a/_states/jenkins_smtp.py b/_states/jenkins_smtp.py
index 530eea2..45f0244 100644
--- a/_states/jenkins_smtp.py
+++ b/_states/jenkins_smtp.py
@@ -24,7 +24,7 @@
         }
         desc.setSmtpPort("${port}")
         desc.setCharset("${charset}")
-        if({reply_to_exists}){
+        if(${reply_to_exists}){
             desc.setReplyToAddress("${reply_to}")
         }
         desc.save()