undertow 1.3.20.Final fix #317

Author: jknack

pom.xml

@@ -2132,7 +2132,7 @@ org.eclipse.jdt.apt.processorOptions/defaultOverwrite=true
   <properties>
     <!-- Dependencies -->
     <jackson.version>2.7.1</jackson.version>
-    <undertow.version>1.3.18.Final</undertow.version>
+    <undertow.version>1.3.20.Final</undertow.version>
     <servlet.version>3.1.0</servlet.version>
     <jetty.version>9.3.7.v20160115</jetty.version>
     <netty.version>4.1.0.CR6</netty.version>