Add Detailed Runbook for Raft to BFT Migration in Hyperledger Fabric based on test-network #3591

Job	Run time
Basic Checks	1m 20s
Integration Tests (raft)	12m 1s
Unit Tests	9m 6s
Integration Tests (pvtdata)	12m 4s
Integration Tests (pvtdatapurge)	6m 0s
Integration Tests (ledger)	13m 26s
Integration Tests (lifecycle)	6m 26s
Integration Tests (e2e smartbft)	25m 34s
Integration Tests (discovery gossip devmode pluggable)	6m 54s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	17m 23s
Integration Tests (sbe nwo msp)	8m 37s
	1h 58m 51s

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