added configuration snapshot_image_format in nova.conf
added configuration snapshot_image_format in nova.conf

git-svn-id: f5642f999e817c9b503b13516f14b6afb51d46ee@238 7e7508ed-7dfa-4282-9f22-b7e683a64a08

JioCloud/jiocloud-nova,varunarya10/jiocloud-nova,varunarya10/jiocloud-nova