Fix FiveTuple printing

[Jauler]

Problem

FiveTuple from connection tracker, when printed would produce the following output:

In nlx_1 there has been 3 connections to <class 'utils.connection_tracker.FiveTuple'> which is more then max limit of 2

Obviously <class 'utils.connection_Tracker.FiveTuple> is not desirable, hence this PR adds def __str__ implementation to the class.

This is the result:

☑️ Definition of Done checklist

• Commit history is clean (requirements)
• README.md is updated
• Functionality is covered by unit or integration tests

[mathiaspeters]

Tiny sorta-unrelated nit/request: Can we change In nlx_1 there has been 3 connections to <class 'utils.connection_tracker.FiveTuple'> which is more then max limit of 2 so that it says than instead of then. #sorrynotsorry

[Jauler]

Tiny sorta-unrelated nit/request: Can we change In nlx_1 there has been 3 connections to <class 'utils.connection_tracker.FiveTuple'> which is more then max limit of 2 so that it says than instead of then. #sorrynotsorry

nice catch. Fixed.

[mathiaspeters]

+2