Remove DriverManager. Initial caching for service.driver.
	deleted:    atmosphere/driver.py
	modified:   service/driver.py
Move to service.driver/get_esh_driver.

	modified:   .gitignore
	modified:   api/__init__.py
	modified:   api/application.py
	modified:   api/flow.py
	modified:   api/hypervisor.py
	modified:   api/instance.py
	modified:   api/machine.py
	modified:   api/meta.py
	modified:   api/occupancy.py
	modified:   api/profile.py
	modified:   api/size.py
	modified:   api/volume.py
	modified:   atmosphere/urls.py
	modified:   core/tasks/instance.py
	modified:   scripts/admin_suspend_all.py
	modified:   scripts/check_volumes.py
	modified:   scripts/euca_instance_report.py
	modified:   scripts/hotfix_apps.py
	modified:   scripts/repair_instance_networking.py
	modified:   scripts/suspend_instance.py
	modified:   service/accounts/openstack.py
	modified:   service/allocation.py
	modified:   service/cache.py
	renamed:    api/__init__.py -> service/driver.py
	modified:   service/instance.py
	modified:   service/tasks/allocation.py
	modified:   service/tasks/driver.py
	modified:   service/tasks/machine.py
	deleted:    tests/__init__.py
	deleted:    tests/create_node.py
	modified:   web/views.py
Merge branch 'cache' into bald-eagle

Conflicts:
	scripts/repair_instance_networking.py
	service/cache.py