add resolv.conf task

roles/host_maintenance/tasks/resolv_conf.yaml

@@ -0,0 +1,17 @@
+# source https://oneuptime.com/blog/post/2026-02-21-how-to-use-ansible-to-manage-etc-resolv-conf/view
+# vars:
+#   resolv_conf:
+#       nameservers:
+#         - x.x.x.x
+#       search_domains:
+#         - local.lan
+- name: Deploy resolv.conf
+  ansible.builtin.template:
+    src: templates/resolv.conf.j2
+    dest: /etc/resolv.conf
+    mode: '0644'
+  when: "resolv_conf is defined"
+
+# todo tasks:
+# systemd-resolvd:systemctl restart systemd-resolved
+# clear cache: resolvectl flush-caches