travis: fix builds

.travis.yml

@@ -6,7 +6,7 @@ before_install:
  - sudo add-apt-repository ppa:ubuntu-lxc/daily -y
  - sudo apt-get update -qq
  - sudo apt-get install -qq libapparmor-dev libcap-dev libseccomp-dev python3-dev docbook2x libgnutls-dev liblua5.2-dev libselinux1-dev libcgmanager-dev
-script: ./autogen.sh && ./configure --enable-tests && make -j4
+script: ./autogen.sh && ./configure --enable-tests --with-distro=unknown && make -j4
 notifications:
   email:
     recipients: