Set HOME for each condor slot such that voms-proxy-init works

Remove setting HOME in grid-init script, move it to job wrapper instead.
Use the more elegant script from grid-init though.

Changes:
	modified:   modules/condor/files/jobwrapper.sh
	modified:   modules/gce_node/templates/grid-setup.sh.atlas.erb
Isolate ATLAS Specific configuration for use with environments

Isolate ATLAS production setup for use in puppet environments. Remove
Belle II configuration. Keep ssh keys for personnel needs access to
workers for debugging.

Changes:
	modified:   manifests/site.pp