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

test/functional/wallet_basic.py

@@ -26,7 +26,7 @@ class WalletTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 4
         self.extra_args = [[
-            "-dustrelayfee=0", "-walletrejectlongchains=0"
+            "-dustrelayfee=0", "-walletrejectlongchains=0", "-whitelist=noban@127.0.0.1"
         ]] * self.num_nodes
         self.setup_clean_chain = True
         self.supports_cli = False