Make LOCKSS's services automatically restart.

I don't know why LOCKSS chose to override Docker's default of restarting
stopped containers. Without this, the only LOCKSS services that come up
after a reboot are the two that do not exit cleanly.

roles/lockss/files/restart_automatically.patch

+--- a/config/docker-compose.mustache
++++ b/config/docker-compose.mustache
+@@ -37,7 +37,6 @@
+ #    replicas: 1
+     mode: global
+     restart_policy:
+-      condition: on-failure
+       delay: 10s
+       max_attempts: 5
+       window: 120s

roles/lockss/tasks/main.yml

@@ -125,10 +125,23 @@
     dest: /usr/src/lockss
     version: "{{ lockss_git_version }}"
     depth: 1
+    force: true
   become: true
   become_user: lockss
   when: not ansible_check_mode
 
+- name: Install patch.
+  package:
+    name: patch
+    state: present
+
+- name: Patch LOCKSS deployment configuration.
+  patch:
+    basedir: /usr/src/lockss
+    src: "{{ role_path }}/files/restart_automatically.patch"
+    strip: 1
+  when: not ansible_check_mode
+
 - name: Install ifconfig.
   package:
     name: net-tools