Improve the runit exporter to log with the stderr

refs. 

* http://smarden.org/runit/runscripts.html

# :smile_cat: :smile_cat: :smile_cat: Expected :smile_cat: :smile_cat: :smile_cat:

Log both **stdout and stderr** with the runit . :v: :smiley: :v:

# :scream_cat: :scream_cat: :scream_cat:  Actual :scream_cat: :scream_cat: :scream_cat:

Log stdout only with the runit . :scream: :exclamation: :question: 

:broken_heart: