Sleep sometime before restarting the node #384

Job	Run time
e2e test for 3-nodes-transfer --env test	10m 48s
e2e test for invoice-ops --env test	10m 57s
e2e test for open-use-close-a-channel --env test	10m 44s
e2e test for udt --env test	11m 3s
e2e test for reestablish --env test	10m 54s
e2e test for cross-chain-hub --env test	11m 13s
e2e test for router-pay --env test	11m 21s
e2e test for udt-router-pay --env test	10m 51s
e2e test for udt --env xudt-test	11m 2s
e2e test for 3-nodes-transfer --env test --env-var HASH_ALGORITHM=sha256	10m 49s
	1h 49m 42s

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