Fixing storage Module
There are 4 errors in the tests for storage.
- Traced the test to find the reason - This is because few tests don't clean up their lock after tests.
- Traced the test to find he reason for creation of lock - lock is created due to usage of item.change_metadata().
Solution - Need to add lock clean up method. item.publish_metadata() can work for the time being.
Again few tests like test_item_metadata_without_publish() fails since item_change_matadata() do not change the item but only metadata part. Seems like another failure due to handling of item in tests.