TT-1155 Allow to run OCR soak test with reorg on Geth blockchain

[lukaszcl]

soak/ocr_test.go can be executed with reorg scenario when simulated (Geth) network is selected and GethReorgConfig provided in overrides.toml:

[Network]
selected_networks=["simulated"]

[Network.GethReorgConfig]
enabled = true
depth = 10
delay_create = "3s"

• Requires Add GethReorgConfig to Network  chainlink-testing-framework#983
• Run this test with reorg below finality as a part of Nightly CI? We do not have a nightly pipeline atm. I created a ticket to add it https://smartcontract-it.atlassian.net/browse/TT-1264

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Example execution: https://grafana.ops.prod.cldev.sh/goto/vUjmHG8Sg?orgId=1