update radosgw recipe

- Add fastcgi script template
- create ceph.conf
- Create radosgw client key
- support for upstart and sysvinit
- (re)start services

Signed-off-by: Alexandre Marangone <alexandre.marangone@inktank.com>
update rgw apache conf

Signed-off-by: Alexandre Marangone <alexandre.marangone@inktank.com>