Enable peer discovery by default

[Christewart]

This PR switches bitcoin-s.node.enable-peer-discovery=true by default in our configuration. This configuration option was added in #4408

This will mean if bitcoin-s.node.mode=neutrino is set, we will query for peers on the p2p network and store them in nodedb.sqlite. After our nodes store a diverse set of peers, we can eventually bump to bitcoin-s.node.maxConnectedPeers and not have our nodes connect to suredbits run nodes by default.

This PR will query for peers on the p2p network every 1 hour. The logs will look something like this

2022-10-25 15:11:08,262UTC INFO [PeerFinder] Querying p2p network for peers...
2022-10-25 15:11:09,443UTC INFO [Socks5Connection] Tor connection request succeeded. target=Socks5Connect(193.178.170.232/<unresolved>:8333) connectedAddress=/0.0.0.0:0
2022-10-25 15:11:09,446UTC INFO [P2PClientActor] We've been disconnected by Peer(193.178.170.232:8333) command=PeerClosed state=Initializing
2022-10-25 15:11:11,601UTC INFO [Socks5Connection] Tor connection request succeeded. target=Socks5Connect(38.141.134.140/<unresolved>:8333) connectedAddress=/0.0.0.0:0
2022-10-25 15:11:11,735UTC INFO [Socks5Connection] Tor connection request succeeded. target=Socks5Connect(84.75.28.247/<unresolved>:8333) connectedAddress=/0.0.0.0:0

sqlite3 ~/.bitcoin-s/mainnet/nodedb.sqlite
-- Loading resources from /Users/chris/.sqliterc
SQLite version 3.37.0 2021-12-09 01:34:53
Enter ".help" for usage hints.
sqlite> select COUNT(*) from peers ;
COUNT(*)
9
sqlite> .quit