Add support for sge (only ubuntu so far)

	new file:   roles/gridengine.yml
	new file:   roles/gridengine/files/all.q.conf
	new file:   roles/gridengine/handlers/main.yml
	new file:   roles/gridengine/tasks/clients.yml
	new file:   roles/gridengine/tasks/master.yml
	new file:   roles/gridengine/templates/allhosts.grp.conf.j2
	new file:   roles/gridengine/templates/hosts.j2
	new file:   roles/gridengine/templates/newhost.qconf.j2
	modified:   site.yml