Unreal Deadline: Fail if machine not authenticated in P4

[antirotor]

Is there an existing issue for this?

• I have searched the existing issues and added correct labels.

Description

Current Behavior

When plugin tries to run perforceTools.DetermineClientWorkspace() (L53, JobPreLoad.py) it fails if the render pc isn't signed in into Perforce.

Expected Behavior

This could be fixed by using the login comand before running any other commands as you already have all required info for that from the environment vars.

Steps To Reproduce:

• Wait for time out to let the machine logout
• Submit render job from Unreal to farm

Additional context:

No response

Relevant log output: