Added ability to join Windows Domain

tasks/Windows.yml

@@ -15,4 +15,13 @@
 - name: Ensure DNS is set
   win_dns:
     dns1: "{{ dns_servers[0] }}"
-    dns2: "{{ dns_servers[1] }}"
+    dns2: "{{ dns_servers[1] }}"
+
+- name: Ensure domain is joined
+  win_ad_domain:
+    admin_user: "{{ ad_admin_username }}"
+    admin_password: "{{ ad_admin_password }}"
+    domain_name: "{{ ad_domain_name }}"
+  when: ad_domain_joined
+  notify: reboot windows
+- meta: flush_handlers