message: travis-ci: use "apt-add-repository" for repo management
diff: @@ -28,8 +28,7 @@ matrix:
  - compiler: gcc
  install:
  - - sudo echo "deb http://archive.ubuntu.com/ubuntu xenial main universe" | sudo tee -a /etc/apt/sources.list.d/xenial.list
  - - sudo echo "deb http://archive.ubuntu.com/ubuntu xenial main" | sudo tee -a /etc/apt/sources.list.d/xenial.list
  + - sudo apt-add-repository "deb http://archive.ubuntu.com/ubuntu xenial main universe"
  - sudo apt-get update -q > build.log 2>&1 || (cat build.log && exit 1)
  - sudo apt-get install unixodbc-dev binutils -y > build.log 2>&1 || (cat build.log && exit 1)
  