tomcat gzip enable

https://tomcat.apache.org/tomcat-8.0-doc/config/http.html#HTTP/1.1_and_HTTP/1.0_Support

$CATALINA_HOME/conf/server.xml を以下の様に設定する。

<Server port="8005" shutdown="SHUTDOWN">
    <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" 
               useBodyEncodingForURI="true" 
               compression="on"/>
</Server>