Remove request headers

Ambassador can remove a list of HTTP headers that would be sent to the upstream from the request.

The remove_request_headers annotation

The remove_request_headers attribute takes a list of keys used to match to the header

A basic example

---
apiVersion: ambassador/v1
kind:  Mapping
name:  tour-ui_mapping
prefix: /
remove_request_headers:
- authorization
service: tour

will drop header with key authorization.