Write a script to do performance testing

[SankaD]

We need a script to automate performance testing to get the perf numbers when necessary. Below is the requirement.

Setup

1. 2 environments setup for performance testing
2. config file with details such as environments to connect to
3. same config file or a different file to setup parameters per each test

Operation

Per each test,

• Read node and spammer environment details from a config file
• Clean rust node and spammer node's data/blocks directory
• Start the nodes
• Measure the performance metrics

Parameters

1. Verification Thread count
2. Tx rate from spammer
3. Payload in transaction

CSV Format

1. Tx Rate from Spammer
2. Tx Payload Size
3. Verification Thread Count
4. Max Tx Rate at network thread
5. Max Tx Rate at Verification Threads
6. Total Txs
7. Block Count
8. Longest Chain length
9. Total Block Size
10. Average Block Size
11. Time to load blocks
12. Time to fetch blocks from peer
13. RAM usage after initial run
14. RAM usage after loading blocks from disk
15. RAM usage after fetching blocks from peer

Output

A CSV file containing values "per" each perf test