Fix this to be idempotent

roles/koji_reminder/tasks/main.yml

@@ -6,6 +6,12 @@
   - python-requests
   - fedmsg
 
+- name: check log file
+  command: stat /var/log/koji-cert-reminder.log
+  register: logstat
+  always_run: yes
+  changed_when: "1 != 1"
+
 - name: Ensure we can write to our own log file
   file: >
     dest=/var/log/koji-cert-reminder.log
@@ -13,6 +19,7 @@
     mode=0644
     owner=fedmsg
     group=fedmsg
+  when: logstat.rc == 1
 
 - name: Copy the scripts over
   copy: >