message: [electum] Fix cookie dir path
  This fixes an issue where on testnet electrs looks for .cookie in
  testnet3/testnet3/.cookie rather than testnet3/.cookie
diff: @@ -61,7 +61,7 @@ std::vector<std::string> electrs_args(int rpcport, const std::string &network)
  }
  // bitcoind data dir (for cookie file)
  - args.push_back("--daemon-dir=" + GetDataDir().string());
  + args.push_back("--daemon-dir=" + GetDataDir(false).string());
  // Use rpc interface instead of attempting to parse *blk files
  args.push_back("--jsonrpc-import");
  