[Openstack-i18n] French install guides for Liberty

Hi team, French team has good progress on install guides for Liberty translation. Nice work, French team! http://docs.openstack.org/liberty/fr/install-guide-obs/ http://docs.openstack.org/liberty/fr/install-guide-rdo/ http://docs.openstack.org/liberty/fr/install-guide-ubuntu/ Also, the guides will be linked from http://docs.openstack.org/draft/draft-index.html soon. At now, we have many translated docs as draft. If you think ready to publish, feel free to move them into public web pages. Regards, KATO Tomoyuki