.ci: Add Ubuntu 17.04 support
.ci: Add Ubuntu 17.04 support

This commit allows us to setup Clear Containers on a Ubuntu 17.04
environment.

Fixes #504

Signed-off-by: Sebastien Boeuf <90b401417360b1924ef3f520ddee932686110f85@intel.com>

devimc/tests,clearcontainers/tests,MarioCarrilloA/tests,devimc/tests,chavafg/tests,clearcontainers/tests,chavafg/tests,MarioCarrilloA/tests