tests: add DockerRun function to restart test
tests: add DockerRun function to restart test

Implement DockerRun function from docker.go at the restart test

Fixes #456

Signed-off-by: Gabriela Cervantes Tellez <7478955d4356a4dc893d64d1345a99c9f58c91ab@intel.com>

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