message: gen_txn_file param is required param for pool creation
diff: @@ -26,8 +26,7 @@ pub mod create_command {
  trace!("execute >> ctx {:?} params {:?}", ctx, params);
  let name = get_str_param("name", params).map_err(error_err!())?;
  - let gen_txn_file = get_opt_str_param("gen_txn_file", params).map_err(error_err!())?
  - .unwrap_or("docker_pool_transactions_genesis");
  + let gen_txn_file = get_str_param("gen_txn_file", params).map_err(error_err!())?;
  let config: String = json!({ "genesis_txn": gen_txn_file }).to_string();
  @@ -219,6 +218,7 @@ pub mod tests {
  let cmd = create_command::new();
  let mut params = CommandParams::new();
  params.insert("name", POOL.to_string());
  + params.insert("gen_txn_file", "docker_pool_transactions_genesis".to_string());
  cmd.execute(&ctx, &params).unwrap();
  }
  @@ -336,6 +336,7 @@ pub mod tests {
  let cmd = create_command::new();
  let mut params = CommandParams::new();
  params.insert("name", POOL.to_string());
  + params.insert("gen_txn_file", "docker_pool_transactions_genesis".to_string());
  cmd.execute(&ctx, &params).unwrap();
  }
  @@ -345,6 +346,7 @@ pub mod tests {
  let cmd = create_command::new();
  let mut params = CommandParams::new();
  params.insert("name", POOL.to_string());
  + params.insert("gen_txn_file", "docker_pool_transactions_genesis".to_string());
  cmd.execute(&ctx, &params).unwrap();
  }
  