job_environment doesn't handle values with spaces

[ericfranz]

The adapters turn the hashes into key value pairs in the command line arguments.

As a result I couldn't do something like this in the submit.yml.erb config in an interactive app:

script:
  job_environment:
    idea: This is a good idea

Instead I would need to do this:

script:
  job_environment:
    idea: "'This is a good idea'"

Then it would at least work in Torque.

[matthu017]

This line shouldn't need to use the to_s method. Whatever is calling it should have already parsed the yaml into a string. https://github.com/OSC/ood_core/blob/master/lib/ood_core/job/script.rb#L151

Edit: It is passed down as a correct hash but gets messed up in these lines:
https://github.com/OSC/ood_core/blob/master/lib/ood_core/job/adapters/torque.rb#L92-L172
https://github.com/OSC/ood_core/blob/master/lib/ood_core/job/adapters/torque/batch.rb#L335