feat(ansible): remove search domain from /etc/resolv.conf

Signed-off-by: Devin Buhl <devin@buhl.casa>

bootstrap/templates/ansible/playbooks/cluster-prepare.yaml.j2

@@ -72,6 +72,19 @@
             dest: /etc/systemd/networkd.conf
             regexp: ManageForeignRoutes
             line: ManageForeignRoutes=no
+        # https://github.com/onedr0p/flux-cluster-template/discussions/635
+        - name: Network Configuration | Remove /etc/resolv.conf
+          ansible.builtin.file:
+            path: /etc/resolv.conf
+            state: absent
+        - name: Network Configuration | Remove search domain
+          ansible.builtin.copy:
+            attributes: +i
+            mode: 644
+            dest: /etc/resolv.conf
+            content: |
+              search .
+              nameserver 1.1.1.1
 
     - name: System Configuration
       notify: Reboot