core: Remove KNOT protocol dependency from HTTP
core: Remove KNOT protocol dependency from HTTP

This patch removes KNOT protocol dependency from HTTP driver. Drivers
should be KNOT protocol agnostic, each layer should be independent
managing it own operations and constants.

CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source