installing bzip2 via pre_tasks in tests

.travis.yml

@@ -15,10 +15,6 @@ env:
 install:
   - pip install molecule docker
   - git clone https://github.com/arillso/tests molecule/default/lint
-addons:
-  apt:
-    packages:
-      - bzip2
 
 before_script:
   - cd ../

molecule/default/playbook.yml

@@ -3,6 +3,11 @@
   hosts: all
   roles:
     - role: arillso.restic
+  pre_tasks:
+    - name: install bzip2
+      package:
+        name: bzip2
+        state: present
   vars:
     restic_download_path: ~/restic
     restic_install_path: ~/restic