seeds: Pull nodes from Luke's seeder

Pull additional nodes from Luke's seeder to further decentralize the
generation of seed nodes.

contrib/seeds/README.md

@@ -8,15 +8,16 @@ and remove old versions as necessary (at a minimum when SeedsServiceFlags()
 changes its default return value, as those are the services which seeds are added
 to addrman with).
 
-The seeds compiled into the release are created from sipa's and achow101's DNS seed,
-virtu's crawler, and fjahr's community AS map data. Run the following commands from the
-`/contrib/seeds` directory:
+The seeds compiled into the release are created from sipa's, achow101's and luke-jr's
+DNS seed, virtu's crawler, and fjahr's community AS map data. Run the following commands
+from the `/contrib/seeds` directory:
 
 ```
 curl https://bitcoin.sipa.be/seeds.txt.gz | gzip -dc > seeds_main.txt
 curl https://mainnet.achownodes.xyz/seeds.txt.gz | gzip -dc >> seeds_main.txt
-curl https://testnet.achownodes.xyz/seeds.txt.gz | gzip -dc > seeds_test.txt
 curl https://21.ninja/seeds.txt.gz | gzip -dc >> seeds_main.txt
+curl https://luke.dashjr.org/programs/bitcoin/files/charts/seeds.txt >> seeds_main.txt
+curl https://testnet.achownodes.xyz/seeds.txt.gz | gzip -dc > seeds_test.txt
 curl https://raw.githubusercontent.com/fjahr/asmap-data/main/latest_asmap.dat > asmap-filled.dat
 python3 makeseeds.py -a asmap-filled.dat -s seeds_main.txt > nodes_main.txt
 python3 makeseeds.py -a asmap-filled.dat -s seeds_test.txt > nodes_test.txt