roles/common: Use dynamic include_tasks for packages

Basically, when using conditionals or variables in your tasks you should
use include_tasks instead of import_tasks. The down side is that you now
need to tag all included tasks individually or with a block, unlike when
using static imports (tags are applied to all imported child tasks).

I would actually like to reduce this task to a single one that uses the
host's ansible_distribution variable, but Ansible 2.5.1 currently gives
the following error: ansible_distribution is undefined.

roles/common/tasks/main.yml

@@ -8,12 +8,12 @@
   tags: ntp
 
 - name: Install common packages
-  import_tasks: packages_Debian.yml
+  include_tasks: packages_Debian.yml
   when: ansible_distribution == 'Debian'
   tags: packages
 
 - name: Install common packages
-  import_tasks: packages_Ubuntu.yml
+  include_tasks: packages_Ubuntu.yml
   when: ansible_distribution == 'Ubuntu'
   tags: packages
 

roles/common/tasks/packages_Debian.yml

@@ -1,6 +1,7 @@
 ---
 - name: Configure apt mirror
   template: src=sources.list.j2 dest=/etc/apt/sources.list owner=root group=root mode=0644
+  tags: packages
 
 - name: Install base packages
   apt: name={{ item }} update_cache=yes
@@ -20,6 +21,7 @@
     - lrzip
     - unzip
     - apt-transport-https # for https support in apt
+  tags: packages
 
 - name: Configure cron-apt
   import_tasks: cron-apt.yml
@@ -27,5 +29,6 @@
 
 - name: Install tarsnap
   import_tasks: tarsnap.yml
+  tags: packages
 
 # vim: set sw=2 ts=2:

roles/common/tasks/packages_Ubuntu.yml

@@ -2,9 +2,11 @@
 - name: Configure apt mirror
   template: src=sources.list.j2 dest=/etc/apt/sources.list owner=root group=root mode=0644
   when: ansible_architecture != 'armv7l'
+  tags: packages
 
 - name: Upgrade base OS
   apt: upgrade=dist update_cache=yes
+  tags: packages
 
 - name: Install base packages
   apt: pkg={{ item }}
@@ -25,12 +27,14 @@
     - lrzip
     - unzip
     - apt-transport-https # for https support in apt
+  tags: packages
 
 - name: Security hardening (CIS Benchmark 1.0)
   apt: pkg={{ item }} state=absent purge=yes
   loop:
     - whoopsie # CIS 4.1
     - apport   # CIS 4.1
+  tags: packages
 
 - name: Remove annoying packages
   apt: pkg={{ item }} state=absent purge=yes
@@ -38,6 +42,7 @@
     - command-not-found
     - command-not-found-data
     - python3-commandnotfound
+  tags: packages
 
 - name: Configure cron-apt
   import_tasks: cron-apt.yml
@@ -45,5 +50,6 @@
 
 - name: Install tarsnap
   import_tasks: tarsnap.yml
+  tags: packages
 
 # vim: set sw=2 ts=2: