Merge pull request #310 from ElementsProject/improve-csv-callback-log… #792

Job	Run time
unit-tests	1m 43s
integration-tests (bitcoin-cln)	26m 31s
integration-tests (bitcoin-lnd)	30m 8s
integration-tests (liquid-cln)	26m 11s
integration-tests (liquid-lnd)	26m 34s
integration-tests (misc-integration)	26m 3s
integration-tests (lwk-cln)	25m 2s
integration-tests (lwk-lnd)	25m 20s
	3h 7m 32s

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