bump fabric-chaincode-go to v2.1.0 #562

Job	Run time
Basic Checks	1m 53s
Unit Tests	7m 59s
Integration Tests (raft)	11m 44s
Integration Tests (pvtdata)	10m 44s
Integration Tests (pvtdatapurge e2e)	9m 57s
Integration Tests (ledger)	12m 21s
Integration Tests (lifecycle)	5m 2s
Integration Tests (smartbft)	18m 47s
Integration Tests (discovery gossip devmode pluggable)	5m 43s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	16m 7s
Integration Tests (sbe nwo msp)	6m 48s
	1h 47m 5s

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