fix: increase log rotator line scan limit
fix: increase log rotator line scan limit

In case where gelf/json logging is used, its fairly easy to exceed the 16k limit, resulting in json output being cut up into multiple strings

the result is invalid json lines which can create all kind of badness in the logging server

This fixes https://github.com/hashicorp/nomad/issues/4699

Signed-off-by: Christian Winther <1b263c24d197917e12efdd5ab1c0816de9ea6839@gmail.com>

dvusboy/nomad,nak3/nomad,burdandrei/nomad,nak3/nomad,hashicorp/nomad,burdandrei/nomad,nak3/nomad,nak3/nomad,dvusboy/nomad,hashicorp/nomad,burdandrei/nomad,dvusboy/nomad,burdandrei/nomad,burdandrei/nomad,hashicorp/nomad,dvusboy/nomad,nak3/nomad,dvusboy/nomad,dvusboy/nomad,nak3/nomad,dvusboy/nomad,hashicorp/nomad,burdandrei/nomad,nak3/nomad,burdandrei/nomad,hashicorp/nomad,hashicorp/nomad