lntest: shutdown all nodes at end of test #16127

Job	Run time
RPC and mobile compilation check	2m 2s
Sqlc check	2m 45s
check commits	6m 5s
cross compilation	31m 36s
lint code	3m 44s
sample configuration check	45s
check pinned dependencies (google.golang.org/grpc v1.59.0)	4s
run unit tests (btcd unit-cover)	18m 12s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	2s
run unit tests (unit tags="kvdb_etcd")	19m 51s
run ubuntu itests (btcd, backend=btcd cover=1)	28m 20s
run unit tests (unit tags="kvdb_postgres")	18m 17s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	38m 16s
run unit tests (unit tags="kvdb_sqlite")	17m 2s
run windows itest	6m 29s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	36m 37s
run unit tests (btcd unit-race)	36m 26s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	37m 27s
run unit tests (unit-module)	20m 55s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	52m 42s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 10m 21s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	40m 6s
run macOS itest	47m 21s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	1h 10m 15s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	40m 1s
check release notes updated	0s
run ubuntu itests (neutrino, backend=neutrino cover=1)	35m 19s
finish	5s
	11h 21m 5s

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