Add zsh to ood

ansible/ood.yml

@@ -4,6 +4,7 @@
   become: true
   roles:
     - { name: 'install_packages', tags: 'install_packages' }
+    - { name: 'install_zsh', tags: 'install_zsh' }
 
 - name: Setup node for use as a virtual cheaha node
   ansible.builtin.import_playbook: cheaha.yml