Report machine status to ganglia

Add module and manifest to configure machine reports for ATLAS worker
nodes using ganglia.  Reportst are made to the central CERN ganglia
server. Needs to be modified for belle.

Changes:
    new file: gce_node/manifests/ganglia.pp
    modified: gce_node/manifests/init.pp
    modified: gce_node/manifests/packages.pp
Remove APF configuration

Clean unused and untested code from puppet. Focus purpose of these
modules to configuring worker nodes.

Changes:
	deleted:    apf/README.md
	deleted:    apf/files/wrapper.sh
	deleted:    apf/manifests/client.pp
	deleted:    apf/manifests/init.pp
	deleted:    apf/templates/apf-grid-setup.sh.erb
	deleted:    apf/templates/factory.conf.erb
	deleted:    apf/templates/monitor.conf.erb
	deleted:    apf/templates/proxy.conf.erb
	deleted:    apf/templates/queues.conf.erb
	deleted:    apf/templates/sysconfig.erb
	modified:   gce_node/manifests/ephemeral.pp
	modified:   gce_node/manifests/init.pp
	modified:   packagerepos/manifests/yumrepos.pp
Clean package installation list

Ensure packages which are required for ATLAS worker nodes as defined
by the cloud operations group wiki. Assume yum will resolve
dependencies.

Changes:
	modified:   cvmfs/manifests/init.pp
	modified:   gce_node/manifests/packages.pp
Enable ganglia/gmond for ATLAS only

Disable ganglia/gmond for experiments other than ATLAS since CERN ATLAS
monitoring does not need to know about work done for other experiments

Changes:
	modified:   gce_node/manifests/ganglia.pp
	modified:   gce_node/manifests/init.pp