Update requires to glanceclient >=0.5.0
Update requires to glanceclient >=0.5.0

Change-Id: If788b94a142f469b5ce47c49a4dcdb05f1455cce

hyakuhei/cleantox,emonty/oslo-hacking,zancas/hacking,openstack-dev/hacking,openstack-dev/hacking,zancas/hacking,emonty/oslo-hacking,hyakuhei/cleantox