Pranay/multi exit #1394

Job	Run time
check	33s
test	2m 14s
clippy	59s
audit	20s
rustfmt	8s
cross-mips64el	47s
cross-mipsel	57s
cross-aarch64	54s
cross-armv7	55s
cross-mips	56s
cross-mips64	44s
integration-test-five-nodes	21m 36s
legacy_integration-test	20m 16s
legacy_integration-test-with-backcompat	22m 54s
integration-test-debts	25m 49s
integration-test-althea-payment	26m 25s
integration-test-multi-exit	24m 4s
integration-test-eth-payments	18m 55s
	2h 49m 26s

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