eos_ip_routing_enabled should not have a default value

[mnarusze]

Yesterday I was testing setting hostname and users on my local dev environment and was surprised to find out that apart from the desired changes, the role disabled ip routing. My bad in not reading the full documentation before launching the role but I didn't expect such a risky default to be there.

In my opinion, there should be no default value for eos_ip_routing_enabled so that if it's skipped in host vars, the current configuration stays.

[dathelen]

@mnarusze Thanks for the feedback. We will discuss this issue during our next meeting and will update this thread with our plan.