Add SCC NTP servers to ntp.conf

roles/common/tasks/ntp.yml

 ---
 - name: install ntpdate
-  package: 
+  package:
     state: installed
     name: ntpdate
   become: yes
@@ -12,3 +12,17 @@
   - start ntp
   - enable ntp
   changed_when: False
+
+- name: insert SCC into ntp configuration
+  become: yes
+  blockinfile:
+    insertafter: ^server .*[a-z]+.*$
+    path: /etc/ntp.conf
+    backup: yes
+    state: present
+    block: |
+      server ntp1.scc.kit.edu
+      server ntp2.scc.kit.edu
+      server ntp3.scc.kit.edu
+      server ntp4.scc.kit.edu
+  tags: ntp