added unbound as nameserver software

roles/nameserver/tasks/configure_unbound_snmpd.yml

@@ -0,0 +1,15 @@
+- name: nameserver | snmpd | get script
+  get_url:
+    url: "https://github.com/librenms/librenms-agent/raw/master/snmp/unbound"
+    dest: "/etc/snmp/unbound"
+    mode: "0755"
+    owner: "root"
+    group: "root"
+
+- name: nameserver | snmpd | configure extend
+  lineinfile:
+    path: "/etc/snmp/snmpd.conf"
+    state: present
+    line: "extend unbound /etc/snmp/unbound"
+    insertafter: "# SECTION: Extends"
+  notify: restart_snmpd