[loadgen] ability to include previously stopped workspaces #11451
Description
Is your feature request related to a problem? Please describe
Right now we start new workspaces
Describe the behaviour you'd like
It would be great to start existing workspaces, so we can test content restore / snapshot restore.
Describe alternatives you've considered
n/a
Additional context
Right now, we know that snapshot restore is a constant (roughly 30s).