Ensure cvmfs is set up before condor starts

Ensure software is avaiable over cvmfs before condor starts.  Set
default number of condor slots to number of processors.  Set condor
service to running but do not enable it on startup.

Changes:
	modified:   condor/manifests/client.pp
	modified:   gce_node/manifests/init.pp
Install java version 1.6.0

Remove java 1.7.0 and ensure that java 1.6.0 is installed as per
discussion with Laurence and atlas ADC group.

Changes:
	modified:   gce_node/manifests/packages.pp