Persist incoming header in outbound request while make an interservice request

**Is your feature request related to a problem? Please describe.**
It could be requirement that we want persist the headers in case of oauth headers which carry information to the outbout request, as it might contain user_id or something like that.

**Describe the solution you'd like**
Create an option which would allow to set persist header to true or false.

**Describe alternatives you've considered**
Passing them manually

**Additional context**
**Should this be actually sent across or it should be parsed and may be added in body or qparams?**

The issue does not name files, tests, or an entry point; start by tracing how incoming headers and outbound interservice requests are handled. Clarify whether propagation is controlled by a true/false option and whether headers are sent unchanged or transformed, then cover the chosen behavior with tests.

Written by the indexing model from the issue text.