BFT Block Puller: updatable connection source #2514

Job	Run time
Basic Checks	3m 32s
Unit Tests	6m 36s
Integration Tests (raft)	14m 43s
Integration Tests (pvtdata)	12m 9s
Integration Tests (pvtdatapurge)	6m 8s
Integration Tests (ledger)	16m 29s
Integration Tests (lifecycle)	7m 55s
Integration Tests (e2e smartbft)	20m 25s
Integration Tests (discovery gossip devmode pluggable)	9m 5s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	17m 2s
Integration Tests (sbe nwo msp)	11m 4s
	2h 5m 8s

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