Add simple playbook task for upgrading servers

We want to treat our servers as cattle; hopefully when this is fleshed out a bit more, it can accomplish the job without too many casualties.

playbooks/tasks/include/upgrade-server.yml

@@ -12,12 +12,6 @@
     upgrade: yes
   register: pacman_upgrade
 
-- name: wait for svntogit to finish
-  wait_for:
-    path: /srv/svntogit/update-repos.sh.lock
-    state: absent
-  when: inventory_hostname == "gemini.archlinux.org"
-
 - name: check for running builds
   block:
     - name: list systemd-nspawn processes
@@ -30,6 +24,12 @@
       when: pgrep_systemd_nspawn is succeeded
   when: "'buildservers' in group_names"
 
+- name: wait for svntogit to finish
+  wait_for:
+    path: /srv/svntogit/update-repos.sh.lock
+    state: absent
+  when: inventory_hostname == "gemini.archlinux.org"
+
 - name: reboot
   reboot:
   when: pacman_upgrade is changed