roles/common: Use an Ansible fact for Ubuntu packages

roles/common/tasks/packages_Ubuntu.yml

@@ -8,9 +8,9 @@
   - name: Upgrade base OS
     apt: upgrade=dist update_cache=yes
 
-  - name: Install base packages
-    apt: pkg={{ item }}
-    loop:
+  - name: Set Ubuntu base packages
+    set_fact:
+      ubuntu_base_packages:
       - git
       - tmux
       - iotop
@@ -28,6 +28,10 @@
       - unzip
       - apt-transport-https # for https support in apt
 
+  - name: Install base packages
+    apt: pkg={{ ubuntu_base_packages }} state=present update_cache=yes
+    loop:
+
   - name: Security hardening (CIS Benchmark 1.0)
     apt: pkg={{ item }} state=absent purge=yes
     loop: