Decouple traffic redirector creation from protocol disruptor

[pablochacin]

Description

Decouple the creation of the traffic redirector from the protocol disruptor, facilitating using different implementations, like for example a noop traffic redirector used for non-transparent proxy (see #169)

Checklist:

• My code follows the coding style of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• Any dependent changes have been merged and published in downstream modules
  

[roobre]

LGTM, left just a simple comment about a (seemingly) unused var.