Clean up unused input/output variables

[timsutton]

From @timsutton on May 28, 2017 14:9

Right now there seem to be some either unused or duplicated input/output variables in some of the processors. For example, when I run a munki recipe, CreativeCloudFeed outputs these 5 variables:

{'Output': {'display_name': u'Media Encoder CC (2017)',
            'icon_url': u'https://adobe-oobe-prod-data-store-ue1.s3.amazonaws.com/prod/icons/AME/11.1.0/192x192.png',
            'minimum_os_version': u'10.10.0',
            'product_info_url': u'https://creative.adobe.com/products/media-encoder',
            'version': u'11.1.0'}}

and yet it defines 10 output variables.

CreativeCloudVersioner also seems to copy several output variables from other processors.

Copied from original issue: mosen/ccp-recipes#24

[timsutton]

I could see some of the other variables defined like family, release_notes being useful. It looks like we just aren't setting them in the env.