Update to jetty version 9.4.11.v20180605
<!-- Skip because of problems with Java 8 -->
<animal.sniffer.skip>true</animal.sniffer.skip>
<felix.java.version>8</felix.java.version>
- <jetty.version>9.4.9.v20180320</jetty.version>
+ <jetty.version>9.4.11.v20180605</jetty.version>
</properties>
<build>
