Improve and update Electrum #50

Job	Run time
build	8m 32s
test (bitcoind)	2m 38s
test (bitcoin-mainnet)	2m 33s
test (bitcoin-regtest)	3m 5s
test (bitcoin-pruned-mainnet)	2m 9s
test (bitcoin-fullchain-mainnet)	2m 22s
test (bitcoin-fullchain-regtest)	2m 32s
test (bitcoin-txindex-mainnet)	2m 48s
test (bitcoin-zmq-mainnet)	1m 59s
test (bitcoin-zmq-regtest)	2m 22s
test (bitcoin-rpc-proxy)	2m 14s
test (bitcoin-rpc-proxy-mainnet)	2m 11s
test (bitcoin-rpc-proxy-regtest)	2m 2s
test (bitcoin-timechain-mainnet)	2m 29s
test (electrs)	2m 37s
test (electrs-mainnet)	2m 17s
test (electrs-regtest)	2m 11s
test (btcpayserver)	2m 30s
test (btcpayserver-system-mainnet)	2m 12s
test (btcpayserver-system-regtest)	2m 20s
test (lnd)	1m 54s
test (lnd-system-mainnet)	2m 21s
test (lnd-system-regtest)	1m 52s
test (lnd-unlocker-system-mainnet)	2m 44s
test (lnd-unlocker-system-mainnet)	2m 18s
test (ridetheln)	2m 14s
test (ridetheln-system)	2m 50s
test (ridetheln-lnd-system-mainnet)	1m 45s
test (ridetheln-lnd-system-regtest)	2m 24s
test (selfhost)	2m 30s
test (selfhost-nginx)	1m 53s
test (selfhost-onion)	2m 33s
test (selfhost-clearnet)	2m 9s
test (selfhost-clearnet-certbot)	2m 13s
test (tor-hs-patch-config)	2m 39s
test (thunderhub)	3m 8s
test (thunderhub-system-mainnet)	1m 47s
test (thunderhub-system-regtest)	2m 23s
test (btc-rpc-explorer-mainnet)	2m 12s
test (lndconnect)	2m 58s
test (selfhost-dashboard-bin)	2m 15s
test (selfhost-dashboard)	2m 38s
test (btc-transmuter)	2m 24s
test (btc-transmuter-system-mainnet)	2m 10s
test (btc-transmuter-system-regtest)	2m 20s
	1h 52m 37s

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