travis: use sudo-less apt-plugin install of libogg-dev.

This lets our test job dispatch on the container infrastructure,
which is faster.

diff --git a/.travis.yml b/.travis.yml
index b302ea2..2c188ef 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 language: c
-sudo: required
-before_install:
-  - sudo apt-get install -y libogg-dev
+addons:
+  apt:
+    packages:
+    - libogg-dev
 script:
   - ./autogen.sh
   - ./configure
-  - make distcheck
\ No newline at end of file
+  - make distcheck