[pom] Update jetty to 9.4.2.v20170220
[pom] Update jetty to 9.4.2.v20170220

dblock/waffle,hazendaz/waffle,dblock/waffle,Waffle/waffle,dblock/waffle,Waffle/waffle,dblock/waffle,Waffle/waffle,hazendaz/waffle,hazendaz/waffle