library/roles/orientdb/tasks/main.yml: Add a task to remove the old hook files.

d4science-ghn-cluster/group_vars/orientdb_dev/orientdb_dev.yml: Add a list of old hook files.

orientdb/tasks/main.yml

@@ -34,9 +34,13 @@
 
     - name: Fetch and install the hook jars
       get_url: url='{{ item }}' dest={{ orientdb_install_dir }}/lib
-      with_items: '{{ orientdb_hooks_jars | default ([]) }}'
+      with_items: '{{ orientdb_hooks_jars | default([]) }}'
       notify: Restart orientdb
 
+    - name: Remove the old hook jars
+      file: dest={{ orientdb_install_dir }}/lib/{{ item }} state=absent
+      with_items: '{{ orientdb_hooks_to_be_removed | default([]) }}'
+
     - name: Install the orientdb default settings
       template: src=orientdb.default.j2 dest=/etc/default/orientdb owner=root group=root mode=0444
       notify: Restart orientdb