Merge #21410: test: increase rpc_timeout for fundrawtx test_transaction_too_large

d09120b test: give fundraw more time for test_transaction_too_large (Jon Atack)

Pull request description:

  to hopefully fix timeouts from a new test added in 48a0319 of #20536 merged March 8, 2021

  seen locally when running via the test runner

  ```
  File "/home/jon/projects/bitcoin/bitcoin/test/functional/rpc_fundrawtransaction.py", line 927, in test_transaction_too_large
  raise JSONRPCException({
      test_framework.authproxy.JSONRPCException: 'generatetoaddress' RPC took longer than 30.000000 seconds. Consider using larger timeout for calls that take longer to return. (-344)
  ```
  and in the CI like https://bitcoinbuilds.org/index.php?ansilog=28537952-2c92-46f2-9871-8918e5ba2738.log#l2398
  ```
  File "/home/ubuntu/src/test/functional/rpc_fundrawtransaction.py", line 927, in test_transaction_too_large
  test_framework.authproxy.JSONRPCException: 'generatetoaddress' RPC took longer than 240.000000 seconds. Consider using larger timeout for calls that take longer to return. (-344)
  ```

Top commit has no ACKs.

Tree-SHA512: f11c923439014fe12420f986c640fd301a26282eb41516957d73b9c751087cbae3d0e316f9ccb49bcb424f488540266f70d3f97948633e77c62bd7935df90452

Author: MarcoFalke

test/functional/rpc_fundrawtransaction.py

@@ -32,6 +32,7 @@ def set_test_params(self):
         # This test isn't testing tx relay. Set whitelist on the peers for
         # instant tx relay.
         self.extra_args = [['[email protected]']] * self.num_nodes
+        self.rpc_timeout = 90  # to prevent timeouts in `test_transaction_too_large`
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
@@ -910,22 +911,23 @@ def test_subtract_fee_with_presets(self):
 
     def test_transaction_too_large(self):
         self.log.info("Test fundrawtx where BnB solution would result in a too large transaction, but Knapsack would not")
-
         self.nodes[0].createwallet("large")
         wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
         recipient = self.nodes[0].get_wallet_rpc("large")
         outputs = {}
         rawtx = recipient.createrawtransaction([], {wallet.getnewaddress(): 147.99899260})
 
-        # Make 1500 0.1 BTC outputs
-        # The amount that we target for funding is in the BnB range when these outputs are used.
-        # However if these outputs are selected, the transaction will end up being too large, so it shouldn't use BnB and instead fallback to Knapsack
-        # but that behavior is not implemented yet. For now we just check that we get an error.
-        for i in range(0, 1500):
+        # Make 1500 0.1 BTC outputs. The amount that we target for funding is in
+        # the BnB range when these outputs are used.  However if these outputs
+        # are selected, the transaction will end up being too large, so it
+        # shouldn't use BnB and instead fall back to Knapsack but that behavior
+        # is not implemented yet. For now we just check that we get an error.
+        for _ in range(1500):
             outputs[recipient.getnewaddress()] = 0.1
         wallet.sendmany("", outputs)
         self.nodes[0].generate(10)
         assert_raises_rpc_error(-4, "Transaction too large", recipient.fundrawtransaction, rawtx)
 
+
 if __name__ == '__main__':
     RawTransactionsTest().main()