Docstring omission in class BaseDiskFileManager.
Docstring omission in class BaseDiskFileManager.

Added documentation for missing Docstring variables.

Change-Id: I29a53b8141c5607815f234a6123e2289200bca34

swiftstack/swift,clayg/swift,psachin/swift,tipabu/swift,notmyname/swift,matthewoliver/swift,tipabu/swift,hurricanerix/swift,larsbutler/swift,tipabu/swift,openstack/swift,psachin/swift,smerritt/swift,hurricanerix/swift,notmyname/swift,revoer/keystone-8.0.0,matthewoliver/swift,prashanthpai/swift,smerritt/swift,nadeemsyed/swift,swiftstack/swift,notmyname/swift,openstack/swift,matthewoliver/swift,smerritt/swift,swiftstack/swift,williamthegrey/swift,clayg/swift,clayg/swift,psachin/swift,nadeemsyed/swift,openstack/swift,prashanthpai/swift,redbo/swift,smerritt/swift,redbo/swift,larsbutler/swift,aerwin3/swift,psachin/swift,hurricanerix/swift,openstack/swift,tipabu/swift,williamthegrey/swift,nadeemsyed/swift,revoer/keystone-8.0.0,nadeemsyed/swift,aerwin3/swift,notmyname/swift,hurricanerix/swift,matthewoliver/swift,clayg/swift