rc.local + Google cloud-init userdata did not do all that it should. Switched back to context/contexthelper.
Added example condor_vmtype and cloud_type

Added example condor_vmtype and cloud_type to the gce_node instance to push
it into line with recent changes to the Condor module.
Added installation of sysctl module
Merge pull request #4 from spiiph/dev

Modifications to keep scripts in line with the recent developments focused on Cloud Scheduler nodes.