Completely reverting commit 4fe8c5b

Travis docker based infra is not suited for testing this plugin

Author: miguelaferreira

.travis.yml

@@ -2,11 +2,9 @@ language: ruby
 notifications:
   email:
     - [email protected]
-sudo: false
-cache: bundler
 before_install:
-  - apt-get update -qq
-  - apt-get install -qq -y bsdtar
+  - sudo apt-get update -qq
+  - sudo apt-get install -qq -y bsdtar
   - gem install bundler -v '1.5.2'
 rvm:
   - 2.0.0