Merge pull request #432 from chenyukang/add-custom-hops #1942

Job	Run time
e2e test for 3-nodes-transfer --env test	4m 37s
e2e test for invoice-ops --env test	3m 46s
e2e test for open-use-close-a-channel --env test	4m 17s
e2e test for udt --env test	4m 12s
e2e test for reestablish --env test	4m 0s
e2e test for cross-chain-hub --env test	4m 11s
e2e test for router-pay --env test	5m 12s
e2e test for udt-router-pay --env test	4m 23s
e2e test for watchtower --env test	5m 36s
e2e test for udt --env xudt-test	4m 21s
e2e test for 3-nodes-transfer --env test --env-var HASH_ALGORITHM=sha256	4m 31s
	49m 6s

Provide feedback