The value of tmnxLogFilterParamsRouterRegexp specifies the type
of string comparison to use to determine if the log event matches
the value of tmnxLogFilterParamsRouter. When the value of
tmnxLogFilterParamsRouterRegexp is 'true', the string in
tmnxLogFilterParamsRouter is a regular expression string to be
matched against the router name string in the log event being
filtered. When it has a value of 'false', the string in
tmnxLogFilterParamsRouter is matched exactly by the event
filter.