[Feature]: Add option for disabling deallocations

[Smalls1652]

What kind of change is this?

Addition

What's the description of the change?

This change would add the ability to disable the deallocation of session host VMs and instead evaluate it as a dry run.

What are the proposed changes that need to be made?

The initial implementation will be focusing on a broad level by adding the ability to define an optional environment variable.