Allow handling permissions with settings.is_public and settings.admin

[ketsapiwiq]

Right now we can use permissions like this:

- name: Public app
  ynh_app:
    name: dokuwiki
    permissions:
      - visitors
      - all_users

- name: Private app
  ynh_app:
    name: dokuwiki
 # default value is append: no
    # append: no
    permissions:
      - admin_username

But we should be able to also do:

In my playbook:

  - name: Install apps (LOOP)
    ynh_app:
      name: "{{ item.name }}"
      label: "{{ item.label }}"
      domain: "{{ item.domain }}"
      settings:
          path: "{{ item.path }}"
          is_public: "{{ item.is_public }}"
          admin: "{{ item.admin }}"
    loop: "{{ ynh_app_test }}"

In my var file:

---
ynh_app_test:
  - name: 20euros
    label: Money
    domain: poclydra.fr
    path: /20euros
    is_public: 0
    admin:

  - name: alltube
    label: yt_dl
    domain: poclydra.fr
    path: /yt_dl
    is_public: 1
    admin: