testground/tests: block reconstruction for 32/64 square size blocks

[Bidon15]

We need to run experiments to know how long will it take for the full node(s) to reconstruct a block from a set of Light Nodes

In this scenario we are not having an assumption of withholding attacks

Pre-Requisite

Block Square Size I	Light Nodes amount J
32	350
64	1412

HW Resources setup for Block Square Size == 32

We already know that we can count on 172 cores CPU and 700 GB of RAM to allocate for testable nodes
Hence, our network setup/HW allocation will look like this:

1. 5 Validators with each having 3 CPU and 4 Gb
2. 5 Bridge Nodes with each having 3 CPU and 4 Gb
3. 350 Light Nodes with each having 0.3 CPU and 1 Gb

Full Node Setup/HW Allocation

• Case 1: 1 Full Node only having 37 CPU 256 Gb
• Case 2: 2 Full Nodes with each 16 CPU and 128 Gb
• Case 3: 3 Full Nodes with each 12 CPU and 64 Gb
• Case 4: 4 Full Nodes with each 8 CPU and 32 Gb

Network Bandwidth:

• Validator/Bridge/Full: 320Mib -- 50ms
• Light: 100Mib -- 50ms

Network Topology

All Cases

For Cases 1-4 we enforce Full Nodes to blacklist all Bridge Nodes' multiaddresses to not receive any shares from them

Case 2:

175 Light nodes can share to 1 Full Node
2 Full Nodes can communicate between one another as they are trusted peers to each other

Case 3:

115 Light nodes can share to 1 Full Node
3 Full Nodes can communicate between one another as they are trusted peers to each other

Case 4:

87 Light nodes can share to 1 Full Node
4 Full Nodes can communicate between one another as they are trusted peers to each other

[derrandz]

@derrandz to add bandwidth estimates from the calculator