CGNAT Exit and integration test #2308

Job	Run time
check	22s
audit	7s
integration-test-debts	7m 53s
integration-test-althea-payment	12m 8s
clippy	3m 47s
integration-test-eth-payments	9m 58s
integration-test-five-nodes	7m 8s
integration-test-multi-exit	9m 1s
test	2m 31s
integration-test-cgnat-exit	7m 56s
integration-test-snat-exit	9m 51s
integration-test-validate-contract	6m 18s
rustfmt	5s
cross-armv7	1m 15s
cross-aarch64	1m 2s
	1h 19m 22s

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