message: adjust wallet.py test to account for a change in param conversion
diff: @@ -284,16 +284,12 @@ class WalletTest (BitcoinTestFramework):
  try:
  txId = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "1f-4")
  except JSONRPCException as e:
  - assert("Invalid amount" in e.error['message'])
  + assert("Error parsing JSON:1f-4" in e.error['message'])
  else:
  raise AssertionError("Must not parse invalid amounts")
  -
  - try:
  + # this is now a valid call because we convert on server side instead of client side
  self.nodes[0].generate("2")
  - raise AssertionError("Must not accept strings as numeric")
  - except JSONRPCException as e:
  - assert("not an integer" in e.error['message'])
  # Import address and private key to check correct behavior of spendable unspents
  # 1. Send some coins to generate new UTXO
  