[pom] Update jetty to 9.3.9.v20160517
[pom] Update jetty to 9.3.9.v20160517

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