localCI: do not try to run empty stages
localCI: do not try to run empty stages

with this patch localCI will not run empty stages
an empty stage does not contain commands

fixes #332

Signed-off-by: Julio Montes <4a43a13347431ef00be7d745d08a5ba1757e840b@intel.com>

chavafg/tests,MarioCarrilloA/tests,sboeuf/tests,devimc/tests,bwarden/tests,MarioCarrilloA/tests,devimc/tests,chavafg/tests,clearcontainers/tests,clearcontainers/tests,sboeuf/tests,bwarden/tests