patch to update jetty

jetty9.3.20.patch

Index: pom.xml
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- pom.xml	(revision afab8557b069dff233bc187ddad46d071eeb6137)
+++ pom.xml	(revision )
@@ -136,7 +136,7 @@
     <derby.version>10.12.1.1</derby.version>
     <parquet.version>1.8.1</parquet.version>
     <hive.parquet.version>1.6.0</hive.parquet.version>
-    <jetty.version>9.2.16.v20160414</jetty.version>
+    <jetty.version>9.3.20.v20170531</jetty.version>
     <javaxservlet.version>3.1.0</javaxservlet.version>
     <chill.version>0.8.0</chill.version>
     <ivy.version>2.4.0</ivy.version>
Index: core/src/main/scala/org/apache/spark/ui/JettyUtils.scala
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- core/src/main/scala/org/apache/spark/ui/JettyUtils.scala	(revision afab8557b069dff233bc187ddad46d071eeb6137)
+++ core/src/main/scala/org/apache/spark/ui/JettyUtils.scala	(revision )
@@ -29,8 +29,8 @@
 import org.eclipse.jetty.proxy.ProxyServlet
 import org.eclipse.jetty.server.{HttpConnectionFactory, Request, Server, ServerConnector}
 import org.eclipse.jetty.server.handler._
+import org.eclipse.jetty.server.handler.gzip.GzipHandler
 import org.eclipse.jetty.servlet._
-import org.eclipse.jetty.servlets.gzip.GzipHandler
 import org.eclipse.jetty.util.component.LifeCycle
 import org.eclipse.jetty.util.thread.{QueuedThreadPool, ScheduledExecutorScheduler}
 import org.json4s.JValue