message: Add test for rpcpassword hash error
diff: @@ -29,6 +29,10 @@ class ConfArgsTest(BitcoinTestFramework):
  conf.write('nono\n')
  self.nodes[0].assert_start_raises_init_error(expected_msg='Error reading configuration file: parse error on line 1: nono, if you intended to specify a negated option, use nono=1 instead')
  + with open(inc_conf_file_path, 'w', encoding='utf-8') as conf:
  + conf.write('server=1\nrpcuser=someuser\nrpcpassword=some#pass')
  + self.nodes[0].assert_start_raises_init_error(expected_msg='Error reading configuration file: parse error on line 3, using # in rpcpassword can be ambiguous and should be avoided')
  +
  with open(inc_conf_file_path, 'w', encoding='utf-8') as conf:
  conf.write('') # clear
  