[custom channels]: generate unique script keys for HTLCs #3477

Job	Run time
Format check	3m 18s
cross compilation	15m 57s
Compilation check	4m 41s
Docker build check	3m 37s
run itests	11m 42s
run itests postgres	20m 0s
migration version check	16s
Lint check	6m 28s
go mod check	3m 23s
RPC check	4m 5s
run LiT tests	2m 17s
sample configuration check	4m 14s
Sqlc check	3m 28s
test vector check	4m 1s
run unit tests (unit-race)	10m 59s
run unit tests (unit-cover)	7m 8s
run unit tests (unit dbbackend=postgres)	5m 13s
finish	3s
	1h 50m 50s

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