Fix: categories and tags
	修改：      _posts/2013-06-09-reship-openstack-architecture.md
	修改：      _posts/2013-06-13-deploy-openstack-on-opensuse-step-by-step---identity-keystone.md
	修改：      _posts/2013-06-17-deploy-openstack-on-opensuse-step-by-step---image-glance.md
New post