Fix some warnings

[GerMalaz]

There are some warnings when using this role:

```WARNING]:` The loop variable 'item' is already in use.
Origin:

item

You should set the loop_var value in the loop_control option for the task to something else to avoid variable collisions and unexpected behavior.

Fix: Use loop (and loop_control) instead of with_items.

```[DEPRECATION WARNING]: INJECT_FACTS_AS_VARS default to `True` is deprecated, top-level facts will not be auto injected after the change. This feature will be removed from ansible-core version 2.24.
``` example ```
Use `ansible_facts["fact_name"]` (no `ansible_` prefix) instead.

Fix: as described, ansible_var_name -> ansible_facts['var_name']