Fix cleanup_images action

... on the strength of migration process changes.
Merge pull request #48 from miarmak/fix_cleanup

Fix cleanup_images action
Added glance backend, get_backend, fixed comp resources transporter
Refactoring scheduler
Merge pull request #49 from toha10/glance_backend

Added glance backend, get_backend, fixed comp resources transporter
Refactoring Init Actions
Merge pull request #50 from mirrorcoder/master

Fix scheduler and init actions
Some structing in os2os.py
Merge pull request #51 from mirrorcoder/master

Some structing in os2os.py
Callback FileLikeProxy
Merge pull request #52 from mirrorcoder/master

Callback FileLikeProxy
Added object storage resource (swift client), get objs info, copy objs
Fix object storage config
Added constants to swift