Refactor find_node_ip_in_network

Refactor find_node_ip_in_network so that it is simplier and works
with multiple interfaces, networks and ipv4/ipv6.
Merge remote-tracking branch 'mmgaggle/wip-find-node-ip' into 83
Fif #83
15 rubocop left... good! :)
Instead of doing some crappy things, we are using the yum cookbook.
We do it this way. It avoids complexity and breaking tests.
fix bad recipe
Fix all foodcritics... Yeah!