Consume Entity in AsynchronousValidationRequest or a connection is lost

When background revalidation of fresh content is fetched from the backend (upstream), and this newly refreshed content is now larger than that of the maximum byte size that we allow for a single item that is put in the cache.  The connection in the pool is not closed correctly; and as a result a connection from the pool is lost. 

I have add a consumption of the entity AsynchronousValidationRequest; which resolves this issue.