Merge bitcoin/bitcoin#22060: contrib: add torv3 seed nodes for testnet, drop v2 ones

6fe0516 contrib: add torv3 seed nodes for testnet, drop v2 ones (Jon Atack)

Pull request description:

  Replace the ancient (2015) Tor V2 hardcoded seeds with new Tor V3 ones. This needs to be done before 0.22 to make sure onion-only testnet nodes can still connect to the network. Continues #21560.

  Ways to test:
  - Re-generate ` src/chainparamsseeds.h` with `cd contrib/seeds && python3 generate-seeds.py . > ../../src/chainparamsseeds.h`, check if git tree stays the same.
  - Create a new testnet node with `bitcoind -testnet -onlynet=onion -proxy=127.0.0.1:9050` (or delete `~/.bitcoin/testnet3/peers.dat`), check if it is able to connect to the network and get blocks.
  - Check if the addresses are connectable for ex.:
  ```python3
  #!/usr/bin/env python3
  import subprocess
  with open('contrib/seeds/nodes_test.txt') as f:
      for line in (line for line in (line.rstrip().split('#', 1)[0] for line in f) if line):
          subprocess.call(["nc", "-v", "-x", "127.0.0.1:9050", "-z"] + line.split(':'))
  ```

  Thanks to jonatack for providing the list.

ACKs for top commit:
  jonatack:
    ACK 6fe0516

Tree-SHA512: 61bfdb44dfab9d02b75e5cb06c089a3b1a1fe7134875e1d09166c4116e961d809aa25422fe03f068876e9423b571ecc4a0c7a7eeacba4aac3b2768717f3ee6d6

Author: laanwj

contrib/seeds/nodes_test.txt

@@ -1,11 +1,16 @@
 # List of fixed seed nodes for testnet
 
 # Onion nodes
-thfsmmn2jbitcoin.onion:18333
-it2pj4f7657g3rhi.onion:18333
-nkf5e6b7pl4jfd4a.onion:18333
-4zhkir2ofl7orfom.onion:18333
-t6xj6wilh4ytvcs7.onion:18333
-i6y6ivorwakd7nw3.onion:18333
-ubqj4rsu3nqtxmtp.onion:18333
+35k2va6vyw4oo5ly2quvcszgdqr56kcnfgcqpnpcffut4jn3mhhwgbid.onion:18333
+blo2esfvk2rr7sr4jspmu3vt2vpgr5rigflsj645fnku7v4qmljurtid.onion:18333
+fuckcswupr5rmlvx2kqqrrosxvjyong4hatmuvxsvtcwe4dsh5rus7qd.onion:18333
+gblylyacjlitd2ywdmo2qqylwtdky7kgeqfvlhiw4zdag4x62tx54hyd.onion:18333
+gzwpduv33l7yze3bcdzj3inebiyjwddjnwvnjhh5wvnv4me76mjt2kad.onion:18333
+h3rphzofxzq52tb63mg5f6kc4my3fkcrgh3m5qryeatts43iljbawiid.onion:18333
+kf4qlhek34b3kgyxyodlmvgm4bxfrjsbjtgayyaiuyhr2eoyfgtm3bad.onion:18333
+mc7k47ndjvvhcgs54wmjzxvate4rtuybbjoryikdssjhcxlx27psbyqd.onion:18333
+mrhiniicugfo7mgrwv3wtolk3tptlcw2uq7ih6sq43fa4k4zbilut3yd.onion:18333
+uiudyws3qizgmepfoh7wwjmsoxoxut4qrmotjjhrn247xnjopr7sfcid.onion:18333
+zc2wvoqcezcrf64trji6jmhtss34a5ds5ntzdhqegzvex3ynrd7nxcad.onion:18333
+zd5m3dgdn46naj36pxvvcalfw2paecle6sdxq64ptwxtxjomkywpklqd.onion:18333
 

src/chainparamsseeds.h

@@ -1206,12 +1206,17 @@ static const uint8_t chainparams_seed_main[] = {
 };
 
 static const uint8_t chainparams_seed_test[] = {
-    0x03,0x0a,0x99,0xcb,0x26,0x31,0xba,0x48,0x51,0x31,0x39,0x0d,0x47,0x9d,
-    0x03,0x0a,0x44,0xf4,0xf4,0xf0,0xbf,0xf7,0x7e,0x6d,0xc4,0xe8,0x47,0x9d,
-    0x03,0x0a,0x6a,0x8b,0xd2,0x78,0x3f,0x7a,0xf8,0x92,0x8f,0x80,0x47,0x9d,
-    0x03,0x0a,0xe6,0x4e,0xa4,0x47,0x4e,0x2a,0xfe,0xe8,0x95,0xcc,0x47,0x9d,
-    0x03,0x0a,0x9f,0xae,0x9f,0x59,0x0b,0x3f,0x31,0x3a,0x8a,0x5f,0x47,0x9d,
-    0x03,0x0a,0x47,0xb1,0xe4,0x55,0xd1,0xb0,0x14,0x3f,0xb6,0xdb,0x47,0x9d,
-    0x03,0x0a,0xa0,0x60,0x9e,0x46,0x54,0xdb,0x61,0x3b,0xb2,0x6f,0x47,0x9d,
+    0x04,0x20,0xdf,0x55,0xaa,0x83,0xd5,0xc5,0xb8,0xe7,0x75,0x78,0xd4,0x29,0x51,0x4b,0x26,0x1c,0x23,0xdf,0x28,0x4d,0x29,0x85,0x07,0xb5,0xe2,0x29,0x69,0x3e,0x25,0xbb,0x61,0xcf,0x47,0x9d,
+    0x04,0x20,0x0a,0xdd,0xa2,0x48,0xb5,0x56,0xa3,0x1f,0xca,0x3c,0x4c,0x9e,0xca,0x6e,0xb3,0xd5,0x5e,0x68,0xf6,0x28,0x31,0x57,0x24,0xfb,0x9d,0x2b,0x55,0x4f,0xd7,0x90,0x62,0xd3,0x47,0x9d,
+    0x04,0x20,0x2d,0x04,0xa1,0x4a,0xd4,0x7c,0x7b,0x16,0x2e,0xb7,0xd2,0xa1,0x08,0xc5,0xd2,0xbd,0x53,0x87,0x34,0xdc,0x38,0x26,0xca,0x56,0xf2,0xac,0xc5,0x62,0x70,0x72,0x3f,0x63,0x47,0x9d,
+    0x04,0x20,0x30,0x57,0x85,0xe0,0x02,0x4a,0xd1,0x31,0xeb,0x16,0x1b,0x1d,0xa8,0x43,0x0b,0xb4,0xc6,0xac,0x7d,0x46,0x24,0x0b,0x55,0x9d,0x16,0xe6,0x46,0x03,0x72,0xfe,0xd4,0xef,0x47,0x9d,
+    0x04,0x20,0x36,0x6c,0xf1,0xd2,0xbb,0xda,0xff,0x8c,0x93,0x61,0x10,0xf2,0x9d,0xa1,0xa4,0x0a,0x30,0x9b,0x0c,0x69,0x6d,0xaa,0xd4,0x9c,0xfd,0xb5,0x5b,0x5e,0x30,0x9f,0xf3,0x13,0x47,0x9d,
+    0x04,0x20,0x3e,0xe2,0xf3,0xe5,0xc5,0xbe,0x61,0xdd,0x4c,0x3e,0xdb,0x0d,0xd2,0xf9,0x42,0xe3,0x31,0xb2,0xa8,0x51,0x31,0xf6,0xce,0xc2,0x38,0x20,0x27,0x39,0x73,0x68,0x5a,0x42,0x47,0x9d,
+    0x04,0x20,0x51,0x79,0x05,0x9c,0x8a,0xdf,0x03,0xb5,0x1b,0x17,0xc3,0x86,0xb6,0x54,0xcc,0xe0,0x6e,0x58,0xa6,0x41,0x4c,0xcc,0x0c,0x60,0x08,0xa6,0x0f,0x1d,0x11,0xd8,0x29,0xa6,0x47,0x9d,
+    0x04,0x20,0x60,0xbe,0xae,0x7d,0xa3,0x4d,0x6a,0x71,0x1a,0x5d,0xe5,0x98,0x9c,0xde,0xa0,0x99,0x39,0x19,0xd3,0x01,0x0a,0x5d,0x1c,0x21,0x43,0x94,0x92,0x71,0x5d,0x77,0xd7,0xdf,0x47,0x9d,
+    0x04,0x20,0x64,0x4e,0x86,0xa1,0x02,0xa1,0x8a,0xef,0xb0,0xd1,0xb5,0x77,0x69,0xb9,0x6a,0xdc,0xdf,0x35,0x8a,0xda,0xa4,0x3e,0x83,0xfa,0x50,0xe6,0xca,0x0e,0x2b,0x99,0x0a,0x17,0x47,0x9d,
+    0x04,0x20,0xa2,0x28,0x3c,0x5a,0x5b,0x82,0x32,0x66,0x11,0xe5,0x71,0xff,0x6b,0x25,0x92,0x75,0xdd,0x7a,0x4f,0x90,0x8b,0x1d,0x34,0xa4,0xf1,0x6e,0xb9,0xfb,0xb5,0x2e,0x7c,0x7f,0x47,0x9d,
+    0x04,0x20,0xc8,0xb5,0x6a,0xba,0x02,0x26,0x45,0x12,0xfb,0x93,0x8a,0x51,0xe4,0xb0,0xf3,0x94,0xb7,0xc0,0x74,0x72,0xeb,0x67,0x91,0x9e,0x04,0x36,0x6a,0x4b,0xef,0x0d,0x88,0xfe,0x47,0x9d,
+    0x04,0x20,0xc8,0xfa,0xcd,0x8c,0xc3,0x6f,0x3c,0xd0,0x27,0x7e,0x7d,0xeb,0x51,0x01,0x65,0xb6,0x9e,0x02,0x09,0x64,0xf4,0x87,0x78,0x7b,0x8f,0x9d,0xaf,0x3b,0xa5,0xcc,0x56,0x2c,0x47,0x9d,
 };
 #endif // BITCOIN_CHAINPARAMSSEEDS_H