Use the latest chef / ubuntu in travis ci
Use the latest chef / ubuntu in travis ci

yakara-ltd/tomcat,opscode-cookbooks/tomcat,nickptrvc/tomcat,Lianping/tomcat,GannettDigital/chef-tomcat,yakara-ltd/tomcat,yakara-ltd/tomcat,nickptrvc/tomcat,chef-cookbooks/tomcat,Lianping/tomcat,nickptrvc/tomcat,chef-cookbooks/tomcat,GannettDigital/chef-tomcat,opscode-cookbooks/tomcat,GannettDigital/chef-tomcat,opscode-cookbooks/tomcat,chef-cookbooks/tomcat,Lianping/tomcat