Compatibility with old version of ansible

playbook/roles/repository/tasks/main.yml

----
+
+  - name: Check if RINA is already installed
+    stat: path=/usr/bin/ipcm
+    register: ipcm
+
   - name: Remove legacy repositories from git.erp5.org
     apt_key: id=1A716324 state=absent
-    when: ansible_distribution == "Debian" and not (rina or "/usr/bin/ipcm"|is_file)
+    when: ansible_distribution == "Debian" and not (rina or ipcm.isreg)
 
   - name: Remove {{ base_open_build_url }} key (and add later) on every upgrade, as expiration date is quite short (2 months).
     apt_key: id=94A63987 state=absent