Update providers.yml

Change ··elcodi.container_parameters·· the class for ··%elcodi.container_parameters.class%··.
Merge pull request #355 from tangrucheng/patch-1

Update providers.yml
Save couponAmount and productAmount in newly created Order

In order for the couponAmount and productAmount to be correctly stored
during th CartOrderTransformer::createOrderFromCart() process, we must
ensure that a correct amount is initialized in the Cart object when the
cart.onload event is triggered.
Removed setCartCouponAmount in Cart context
Removed setCouponAmount from Cart transformer