Avoid Queueing on computers that don't exist

[adamdriscoll]

Summary of the new feature / enhancement

In certain environments, users are including names of computers for scheduling purposes that do not exist in the current environment. For example, in development, the schedules should not run but in production they should. They share a code base. What ends up happening is that PSU queues jobs on a hangfire queue for a computer that will never exist.

Proposed technical implementation details (optional)

No response