Cassandra backend: update item
Conditional updates are not supported
'Add' operation is not supported
Cassandra backend: put item
Conditional updates are not supported
Put method implemented
Merge pull request #30 from ikhudoshyn/cassandra-update-item

Cassandra backend: update item
Merge pull request #2 from Mirantis/master

update local fork
Test added for put_item
get_item method implemented
oslo.common file reverted
oslo.common file reverted
Merge pull request #31 from dukhlov/master

test added for put_request method
API: Scan
Merge pull request #32 from ikhudoshyn/api-scan

API: Scan