Adding a new script for running stress-ng workload on one or more VMs and collecting statistics from the run.
Usage:
./stress_up <vm1> <vm2> ... - run the load test on one or more VMs listed. All VMs need to be on the same host.
./stress_up - run the load on all available VMs. All VMs need to be on the same host.
The load is run through stress-ng utility, which needs to be installed already on the VM.
This is likely not the best place for this script, but I wanted to check it in somewhere. I will likely change it be part of rack command.
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