fixes ssh key gen idempotency

if all keys are generated, due to the condition, the service tries to
start always but isn't because the conditions aren't met

roles/ssh/tasks/main.yml

@@ -106,6 +106,10 @@
     name: '{{ __ssh_genkeys }}'
     state: started
   become: yes
+  register: __ssh_keys_generated
+  changed_when:
+    - __ssh_keys_generated.changed
+    - __ssh_keys_generated.status.ConditionResult == 'yes'
   when: __ssh_genkeys is defined
   tags:
     - ssh-host-keys