Add apt_common role for third party repositories

roles/apt_common/tasks/main.yml

@@ -0,0 +1,19 @@
+---
+- name: Install GnuPG (to manage the APT keystore)
+  become: true
+  apt:
+    name: gnupg2
+    state: latest
+
+- name: Install common CA certificates
+  become: true
+  apt:
+    name: ca-certificates
+    state: latest
+
+- name: Ensure that APT can use HTTPS repositories
+  become: true
+  apt:
+    name: apt-transport-https
+    state: latest
+...