Fix intermittent test failures due to missing sync_all

Author: meshcollider

test/functional/rpc_fundrawtransaction.py

@@ -1011,6 +1011,7 @@ def test_external_inputs(self):
         self.nodes[0].sendtoaddress(addr, 10)
         self.nodes[0].sendtoaddress(wallet.getnewaddress(), 10)
         self.generate(self.nodes[0], 6)
+        self.sync_all()
         ext_utxo = self.nodes[0].listunspent(addresses=[addr])[0]
 
         # An external input without solving data should result in an error

test/functional/rpc_psbt.py

@@ -628,6 +628,7 @@ def test_psbt_input_keys(psbt_input, keys):
 
         self.nodes[0].sendtoaddress(addr, 10)
         self.generate(self.nodes[0], 6)
+        self.sync_all()
         ext_utxo = self.nodes[0].listunspent(addresses=[addr])[0]
 
         # An external input without solving data should result in an error

test/functional/wallet_send.py

@@ -503,6 +503,7 @@ def run_test(self):
         self.nodes[0].sendtoaddress(addr, 10)
         self.nodes[0].sendtoaddress(ext_wallet.getnewaddress(), 10)
         self.generate(self.nodes[0], 6)
+        self.sync_all()
         ext_utxo = ext_fund.listunspent(addresses=[addr])[0]
 
         # An external input without solving data should result in an error