Add option to override confirmation in yaml-nic-config-2-script.py
Add option to override confirmation in yaml-nic-config-2-script.py

This change adds the option to override the user input confirmation
to overwrite the nic template file. This is required when the script
is used inside automated jobs.

Closes-bug: 1770296

Change-Id: Ic8275bb3a944e503c73ab06c3d5140ea3563c0a6

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates