Environment variable SCHEDULER_ORDER_STATE should work with PowerShell language

Current Situation

• The environment variable SCHEDULER_ORDER_STATE with the PowerShell language is not accessible. When the variable is printed in the job script then it prints the empty value.

Desired Behavior

• The environment variable SCHEDULER_ORDER_STATE should be accessible with the PowerShell language.

Maintainer Notes

• The JobScheduler provides environment variables for Shell jobs. However, PowerShell jobs are API jobs, therefore no environment variables are provided.
• Instead the requested information as e.g. the order state can be retrieved from the PowerShell Job API, see https://www.sos-berlin.com/doc/en/scheduler.doc/api/Order-powershell.xml