jetty7Version = 7.6.16.v20140903
jetty7ServletApiVersion = 2.5
jetty8Version = 8.1.8.v20121106
jetty8ServletApiVersion = 3.0.1
jetty9Version = 9.2.22.v20170606
jetty93Version = 9.3.20.v20170531
jetty94Version = 9.4.6.v20170531
jetty9ServletApiVersion = 3.1.0
tomcat7Version = 7.0.78
tomcat7ServletApiVersion = 3.0.1
tomcat8Version = 8.0.44
tomcat8ServletApiVersion = 3.1.0