message: Change r2d2 max pool to 2 (since indy lib is single threaded)
diff: @@ -1083,7 +1083,7 @@ impl WalletStorageType for PostgresStorageType {
  Ok(manager) => manager,
  Err(_) => return Err(WalletStorageError::NotFound)
  };
  - let pool = match r2d2::Pool::new(manager) {
  + let pool = match r2d2::Pool::builder().max_size(2).build(manager) {
  Ok(pool) => pool,
  Err(_) => return Err(WalletStorageError::NotFound)
  };
  