Add time limit for the Launcher.
Add time limit for the Launcher.

- Will by default kill a job (and fail the test) if it takes
  longer than 60 seconds to run.
- The intention is to detect wedged nodes with this scheme.
- To remove the time_limit, append time_limit=None to the call to the
  factory.

Change-Id: I4b8de1fba327078118696e5fed65c8eaa309d3f0
Signed-off-by: Geltz, Brad <e42f3ad4099980ea02f08e076efbee5cf9d4a803@intel.com>

sssylvester/geopm,geopm/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,sssylvester/geopm,geopm/geopm,cmcantalupo/geopm,sssylvester/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,sssylvester/geopm