Make user for upload_yard task configurable
Make user for upload_yard task configurable

It seems I've had some config changes since the last result that mean
the default user doesn't work any more. Make it configurable.

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

geni/wikitext,barnaclebarnes/wikitext,wincent/wikitext,geni/wikitext,barnaclebarnes/wikitext,geni/wikitext,wincent/wikitext,barnaclebarnes/wikitext