Merge branch 'gromit/set-password_hash-rounds' into 'master'

postfix_null: Use fixed amount of rounds for password_hash

See merge request !880

roles/postfix_null/tasks/main.yml

@@ -15,7 +15,7 @@
     name: "{{ inventory_hostname_short }}"
     comment: "SMTP Relay Account for {{ inventory_hostname }}"
     group: nobody
-    password: "{{ postfix_relay_password | password_hash('sha512') }}"
+    password: "{{ postfix_relay_password | password_hash('sha512', rounds=5000) }}"
     shell: /sbin/nologin
     update_password: always
     home: /home/"{{ inventory_hostname }}"  # Set home directory so shadow.service does not fail