readme: add functional test dependencies
readme: add functional test dependencies

add functional test dependencies and installation instructions

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

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