[MACRO] Proof of Stake Test Plan

[sveitser]

• [PoS Test] node joins after several epochs have passed and must catchup #2602
• [PoS Test] node joins when the light client contract has not been upgraded #2603
• [PoS Test] epoch transition with f nodes overlapping HotShot#4045
• [PoS Test] epoch transition with f+1 nodes overlapping HotShot#4046
• [PoS Test] epoch transition with 2f nodes overlapping HotShot#4047
• [PoS Test] epoch transition with 2f + 1 nodes overlapping HotShot#4048
• [PoS Test] epoch transition with 3f nodes overlapping HotShot#4049
• [PoS Test] epoch transition with randomized quorum size HotShot#4050
• [PoS Test] Performance with many delegators #2604
• [PoS Test] epoch transition with failing leaders #2605
• [PoS Test] epoch transition with malicious QC dissemination #2606
• [PoS Test] node is offline during epoch transition: after node comes back, it is able to catch up on consensus state #2607
• [PoS Test] archive node joining after several epochs: it is able to recover historical data from earlier epochs #2608
• [PoS Test] epoch changes under heavy load (max throughput small transactions) #2609
• [PoS Test] epoch changes under heavy load (max throughput large transactions) #2610
• [PoS Test] upgrade → epoch change → new nodes running on new version, nodes that are in both epochs run on the new version automatically #2611