Manually handle static addressing for private interface

Vagrant isn't able to properly configure modern Fedora images [1], so
handle network configuration for eth1 in the provisioning playbook.

[1]: hashicorp/vagrant#12762

Vagrantfile

@@ -14,8 +14,14 @@ Vagrant.configure("2") do |config|
   (1..node_count).each do |machine_id|
     config.vm.define "node#{machine_id}" do |node|
       node.vm.hostname = "node#{machine_id}"
+
+      # We disable dhcp here because Vagrant doesn't know
+      # how to properly configure modern networkmanager based
+      # systems. We it ourselves in provision.yaml playbook
+      # instead.
       node.vm.network :private_network,
-        :ip => "10.0.0.#{10 + machine_id}"
+        :ip => "10.0.0.#{10 + machine_id}",
+        :libvirt__dhcp_enabled => false
 
       if machine_id == node_count
         node.vm.provision :ansible do |ansible|

files/private.nmconnection

@@ -0,0 +1,10 @@
+# Managed by Ansible
+[connection]
+id=private
+type=ethernet
+interface-name=eth1
+autoconnect=true
+
+[ipv4]
+method=manual
+address1={{ address }}

provision.yaml

@@ -1,8 +1,44 @@
+- hosts: all
+  gather_facts: false
+  become: true
+  tags: [network]
+  tasks:
+    - name: Read address from ifcfg file
+      changed_when: false
+      command: >-
+        awk -F= '$1 == "IPADDR" {print $2}' /etc/sysconfig/network-scripts/ifcfg-eth1
+      register: ifcfg
+
+    - name: Create private network config
+      template:
+        src: files/private.nmconnection
+        dest: /etc/NetworkManager/system-connections/private.nmconnection
+        owner: root
+        mode: 0600
+      vars:
+        address: "{{ ifcfg.stdout }}"
+      notify: restart nm
+
+  handlers:
+    - name: restart nm
+      listen: restart nm
+      service:
+        name: NetworkManager
+        state: restarted
+
+    - name: bring up interface
+      listen: restart nm
+      command: nmcli c up private
+
+
 - hosts: all
   gather_facts: true
   become: true
   tags: [hosts]
   tasks:
+    - debug:
+        var: ansible_eth1
+
     - name: Remove old entries from /etc/hosts
       lineinfile:
         path: /etc/hosts