Added 'discovery' module in order to support py26 unit tests running
Merge pull request #5 from Mirantis/master

pull upstream changes
The version is 2.0.1 now
EC2 Authorization
Support for user and system tables scope was added
Try to get user-id and tenant-id from ec2 auth data
Use api-paste.ini as the only source of configuration
for ec2 auth
Merge pull request #105 from dukhlov/master

refactoring and support user and system tables scopes have been added
Merge pull request #104 from ikhudoshyn/ec2auth

EC2 Authorization