rt1(z9 host) unbound(role) kea_dhcp(role): create unbound and kea_dhcp role for rt1

- create unbound role
- create kea_dhcp role
- configure unbound and keadhcp on rt1(z9 host)

roles/unbound/tasks/prometheus-exporter.yml

@@ -0,0 +1,17 @@
+---
+- name: install unbound prometheus exporter
+  become: true
+  ansible.builtin.package:
+    name: prometheus-unbound-exporter
+  notify: prometheus-unbound-exporter.enabled
+
+- name: configure unbound exporter
+  become: true
+  ansible.builtin.copy:
+    dest: /etc/conf.d/prometheus-unbound-exporter
+    content: |
+      UNBOUND_EXPORTER_ARGS="-unbound.ca "" -unbound.cert "" -unbound.host "unix:///run/unbound-control.sock"
+    owner: root
+    group: root
+    mode: '0660'
+  notify: prometheus-unbound-exporter.restarted