Merge bitcoin/bitcoin#25865: test: speedup wallet tests by whitelisting peers (immediate tx relay)

b21e522ce4 test: speedup wallet tests by whitelisting peers (immediate tx relay) (Sebastian Falbesoner)

Pull request description:

  In the course of testing #25297 by running all wallet-related functional tests (see https://github.com/bitcoin/bitcoin/pull/25297#issuecomment-1203365589), I noticed that the run-time of those tests vary a lot between runs, in fact too much for a useful comparison. This PR fixes this by making the tests both more deterministic and also faster, using the good ol' immediate tx relay trick (parameter `-whitelist=noban@127.0.0.1`).

  master branch:
  ```
  wallet_abandonconflict.py --descriptors   | ✓ Passed  | 7 s
  wallet_abandonconflict.py --legacy-wallet | ✓ Passed  | 23 s
  wallet_balance.py --descriptors           | ✓ Passed  | 17 s
  wallet_balance.py --legacy-wallet         | ✓ Passed  | 21 s
  wallet_basic.py --descriptors             | ✓ Passed  | 32 s
  wallet_basic.py --legacy-wallet           | ✓ Passed  | 56 s
  wallet_bumpfee.py --descriptors           | ✓ Passed  | 44 s
  wallet_bumpfee.py --legacy-wallet         | ✓ Passed  | 45 s
  wallet_groups.py --descriptors            | ✓ Passed  | 89 s
  wallet_groups.py --legacy-wallet          | ✓ Passed  | 94 s
  wallet_hd.py --descriptors                | ✓ Passed  | 7 s
  wallet_hd.py --legacy-wallet              | ✓ Passed  | 13 s
  wallet_importdescriptors.py --descriptors | ✓ Passed  | 26 s
  wallet_listreceivedby.py --descriptors    | ✓ Passed  | 28 s
  wallet_listreceivedby.py --legacy-wallet  | ✓ Passed  | 18 s

  ALL                                       | ✓ Passed  | 520 s (accumulated)
  Runtime: 526 s
  ```

  PR branch:
  ```
  wallet_abandonconflict.py --descriptors   | ✓ Passed  | 7 s
  wallet_abandonconflict.py --legacy-wallet | ✓ Passed  | 11 s
  wallet_balance.py --descriptors           | ✓ Passed  | 8 s
  wallet_balance.py --legacy-wallet         | ✓ Passed  | 8 s
  wallet_basic.py --descriptors             | ✓ Passed  | 29 s
  wallet_basic.py --legacy-wallet           | ✓ Passed  | 36 s
  wallet_bumpfee.py --descriptors           | ✓ Passed  | 39 s
  wallet_bumpfee.py --legacy-wallet         | ✓ Passed  | 32 s
  wallet_groups.py --descriptors            | ✓ Passed  | 39 s
  wallet_groups.py --legacy-wallet          | ✓ Passed  | 41 s
  wallet_hd.py --descriptors                | ✓ Passed  | 8 s
  wallet_hd.py --legacy-wallet              | ✓ Passed  | 11 s
  wallet_importdescriptors.py --descriptors | ✓ Passed  | 17 s
  wallet_listreceivedby.py --descriptors    | ✓ Passed  | 7 s
  wallet_listreceivedby.py --legacy-wallet  | ✓ Passed  | 9 s

  ALL                                       | ✓ Passed  | 302 s (accumulated)
  Runtime: 309 s
  ```
  Note that an alternative approach could be to whitelist peers by default for nodes in the functional test framework and only enable the trickle relay for the few tests where it's really needed.

ACKs for top commit:
  naumenkogs:
    utACK b21e522ce4

Tree-SHA512: ac3c8f8f5a401d1b6af60ece9c77e72449f18920c2cb4a1bd65fb4d62cf428779ebf4e1d29009a882977b2252922df4e7183541e0da8de932f8cd479149e8a86

test/functional/wallet_bumpfee.py

@@ -53,6 +53,7 @@ class BumpFeeTest(BitcoinTestFramework):
             "-walletrbf={}".format(i),
             "-mintxfee=0.00002",
             "-addresstype=bech32",
+            "-whitelist=noban@127.0.0.1",
         ] for i in range(self.num_nodes)]
 
     def skip_test_if_missing_module(self):