apt-repositories: flush handlers for each task file

Each task file can be included separately,
so we need to flesh in each one of them

apt-repositories/tasks/backports.yml

@@ -22,3 +22,6 @@
     backup: yes
     mode: "0640"
   notify: apt update
+
+- name: Intermediate flush of handlers
+  meta: flush_handlers

apt-repositories/tasks/basics_components.yml

@@ -12,3 +12,6 @@
   - 'deb(-src)? http://mirror.evolix.org/debian/? {{ ansible_distribution_release }}'
   - 'deb(-src)? http://mirror.evolix.org/debian/? {{ ansible_distribution_release }}-updates'
   notify: apt update
+
+- name: Intermediate flush of handlers
+  meta: flush_handlers

apt-repositories/tasks/evolix_public.yml

@@ -8,3 +8,6 @@
     backup: yes
     mode: "0640"
   notify: apt update
+
+- name: Intermediate flush of handlers
+  meta: flush_handlers

apt-repositories/tasks/main.yml

@@ -18,6 +18,3 @@
 - name: Install Evolix Public APT repository
   include: evolix_public.yml
   when: apt_repositories_install_evolix_public
-
-- name: Intermediate flush of handlers
-  meta: flush_handlers