Underutilization of lab machines

[ProjectsByJackHe]

This issue must be solved first:
#221 --- performance metrics vary between machines

Today, our stateless lab only has 2 machines added.

Additionally, with the current design, since it uses VM checkpoints, a pair of machine can only support 1 type of OS (WS2022, WS2025, Linux...)

For now, once we figure out the exact configurations to get uniform perf metrics on each machine, let's expand our stateless lab , or at the very least, increase the number of lab machines currently hosting static lab VMs.

This unblocks #73

[ProjectsByJackHe]

We have finalized the first version of netperf lab ES, and will scale up for 10 more machines.

#221 can be solved independently once we have more datapoints.