b33cabda__0_25_dev____System_Properties__Description
[Property] org.apache.coyote. USE_CUSTOM_STATUS_MSG_IN_HEADER [Description] 
If this is true, custom HTTP status messages will be used within HTTP headers. If a custom message is specified that is not valid for use in an HTTP header (as defined by RFC2616) then the custom message will be ignored and the default message used. If not specified, the default value of false will be used.
Apache Tomcat 8 Configuration Reference (8.0.25-dev) - System Properties
Description