Testing script for Whiteblock

[mhchia]

This PR includes the testing script test/test_series.py, which is capable of

• spinning up n docker nodes with sharding-p2p-poc running, connecting nodes, and broadcasting data
• measuring how much time it takes to receive a broadcasted data
• testing if the bootnodes functioning well

Also, added logs and fixes https://github.com/ethresearch/sharding-p2p-poc/issues/105 in ShardManager

TODO

• [x] Organize the CLI outputs
• [x] Finish the first testing logic(one shard, how long it takes to broadcast to X% nodes)

How to run it

cd test
pip install python-dateutil
python test_series.py

Note

• The script becomes slower when the number of nodes becomes larger, i.e. 100. Should find out the reason and solve it.
• The script uses threads when spinning up nodes and performing some CLIs, to reduce the time consumed. Probably need to change it when it consumes too many resources when the number of nodes becomes larger.

Cute Animal Picture

[mhchia]

Note: possible TODOs

• [x] Do not connectShardNodes automatically, to avoid changing the topology when subscribing to a new shard
• [x] Add logs in makeGeneralValidator when nodes receive new data

[mhchia]

Ready for review if CI passes

[mhchia]

cc @zscole @araskachoi