Enable child order job results to be passed to the parent order in Fork instructions

Current Situation

• Jobs in a workflow can add job results to order variables that are carried by the current order.
  • This feature is available for new order variables that are created within a workflow, it cannot be used to update order variables that exist at the point in time when the order enters the workflow.
  • This feature is available for orders using Shell Jobs and JVM jobs in job sequences, it is not available for child orders in Fork instructions and ForkList instructions.

Desired Behavior

• The Fork instruction allows to specify the names of parent order variables and the values of child order variables in a branch to update variables of the parent order on completion of the branch.
  • A branch can return variables only that are not returned by a parallel branch.
• For the desired behavior with ForkList instructions see JS-1945