roles: use fully qualified module names

roles/common/tasks/tarsnap.yml

@@ -1,24 +1,24 @@
 ---
 - name: Add Tarsnap apt mirror
-  template: src=tarsnap_sources.list.j2 dest=/etc/apt/sources.list.d/tarsnap.list owner=root group=root mode=0644
+  ansible.builtin.template: src=tarsnap_sources.list.j2 dest=/etc/apt/sources.list.d/tarsnap.list owner=root group=root mode=0644
   register: add_tarsnap_apt_repository
   when: ansible_architecture != 'armv7l'
 
 - name: Add GPG key for Tarsnap
-  apt_key: id=0xBF75EEAB040E447C url=https://pkg.tarsnap.com/tarsnap-deb-packaging-key.asc state=present
+  ansible.builtin.apt_key: id=0xBF75EEAB040E447C url=https://pkg.tarsnap.com/tarsnap-deb-packaging-key.asc state=present
   register: add_tarsnap_apt_key
 
 - name: Update apt cache
-  apt:
+  ansible.builtin.apt:
     update_cache: yes
   when:
     add_tarsnap_apt_key is changed or
     add_tarsnap_apt_repository is changed
 
 - name: Install tarsnap
-  apt: pkg=tarsnap cache_valid_time=3600
+  ansible.builtin.apt: pkg=tarsnap cache_valid_time=3600
 
 - name: Copy tarsnaprc
-  copy: src=tarsnaprc dest=/root/.tarsnaprc owner=root group=root mode=0600
+  ansible.builtin.copy: src=tarsnaprc dest=/root/.tarsnaprc owner=root group=root mode=0600
 
 # vim: set sw=2 ts=2: