azure: Use container URLs instead of ContainerClient instances as attributes
A future commit will start using aio.ContainerClient instances, which must be created on the fly from these URLs.
Migrated from D5742 (view on Phabricator)
A future commit will start using aio.ContainerClient instances, which must be created on the fly from these URLs.
Migrated from D5742 (view on Phabricator)