CKAN DB init check: change failed value

Only display DB init check as failed if an unexpected failure occurs,
not if the DB is not initialized yet (which is expected when running
the playbook for the first time)

roles/ckan/tasks/main.yml

@@ -263,7 +263,7 @@
   become: true
   become_user: postgres
   ansible.builtin.command: 'psql -d ckan_default -c "select * from public.user"'
-  ignore_errors: true
+  failed_when: "userlist.rc != 0 and 'ERROR:  relation \"public.user\" does not exist' not in userlist.stderr"
   register: userlist
   changed_when: false
   vars:
@@ -277,13 +277,13 @@
   vars:
     # Pipelininig is needed for internal temporary files
     ansible_ssh_pipelining: true
-  when: 'userlist.rc !=0 or "default" not in userlist.stdout'
+  when: 'userlist.rc != 0 or "default" not in userlist.stdout'
 
 # Reload supervisorctl as task, because there is no way to enforce ordering in
 # Ansible handlers, and we need to reload before we can start tasks.
 - name: Reload supervisorctl  # noqa command-instead-of-module
   ansible.builtin.command: supervisorctl reload
-  when: 'userlist.rc !=0 or "default" not in userlist.stdout'
+  when: 'userlist.rc != 0 or "default" not in userlist.stdout'
 
 - name: Check if CKAN admin user exists
   become_user: root