HTTP consumer to improve

We need to be able to give the path of the body that the http consumer component will receive.
(It will allow us to use attributes from the root and to put another attribute in the body -> so that the attributes used for the header or the url, aren't send in the body)

Start by locating the HTTP consumer component and tracing how it constructs the received request body. Determine how a configurable body path could preserve root attributes while excluding values used for the header or URL, then verify the resulting body behavior with the component's existing tests or usage examples.

Written by the indexing model from the issue text.