Choosing the closest ubuntu mirror before anything else

roles/common/tasks/main.yml

 ---
 # Defines tasks applicable across all machines in the infrastructure.
+- name: Set up closest mirror autoselect (ubuntu-only)
+  template: src=apt_sources.list.j2 dest=/etc/apt/sources.list
+  when: ansible_distribution == 'Ubuntu'
 
 - name: Update apt cache
   apt: update_cache=yes

roles/common/templates/apt_sources.list.j2

+# This file is generated by Sovereign
+deb mirror://mirrors.ubuntu.com/mirrors.txt {{ ansible_distribution_release }} main restricted universe multiverse
+deb mirror://mirrors.ubuntu.com/mirrors.txt {{ ansible_distribution_release }}-updates main restricted universe multiverse
+deb mirror://mirrors.ubuntu.com/mirrors.txt {{ ansible_distribution_release }}-backports main restricted universe multiverse
+deb mirror://mirrors.ubuntu.com/mirrors.txt {{ ansible_distribution_release }}-security main restricted universe multiverse