.travis.yml: force old config on apt-get upgrade

Signed-off-by: Roger Meier <[email protected]>

.travis.yml

@@ -4,7 +4,7 @@ compiler:
   - clang
 before_install:
  - sudo apt-get update -qq
- - sudo apt-get upgrade -qq -y
+ - sudo DEBIAN_FRONTEND=noninteractive apt-get -qq -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" upgrade
  - sudo apt-get install -qq -y unixodbc-dev libmysqlclient-dev
 script: ./configure & make -s