Allows specifying a folder attribute for each job generated, which in
turn is used when creating or uploading to place the job under the
requested folder.
The job name is expanded after defaults are applied, to support the
attribute being defined within a set of defaults applied to a number of
jobs.
This in turn allows for multiple jobs with the same basename to exist,
provided they are targeted at different folders.
Does not support creating the folders if they do not exist.
Change-Id: I8c2157c4c81087cc972a048d1b88d5f08ac65361