As an Opencast admin, I want to set workflow properties from an external script
Internal workflow operations such as media inspection create workflow variables for attributes of the mediapackage (for example resolution) which can be used in subsequent workflow operations.
It should be possible to do this using external scripts, i.e. executed by the Execute Service WOHs (Execute Once or Execute Many).
The Execute Service will be extended with an additional job configuration option which if set, will take the output of the executed script and interpret it as key-value pairs (key=value), setting workflow variables for each.