Merge pull request #1105 from owncloud/fixLegacyTravis

Switch from Travis legacy infrastructure to container-based

diff --combined .travis.yml
index 5f42267,056092f..0db9b1e
--- 1/.travis.yml
--- 2/.travis.yml
+++ b/.travis.yml
@@@ -1,8 -1,10 +1,9 @@@
+ sudo: false
  language: android
  android:
    components:
      - build-tools-22.0.1
 -    - android-19
 -    - android-16
 +    - android-22
  before_install:
    - rm pom.xml
  script: