Containers: Extend from a Basic Container
Extend all containers from a Basic Container to add the abillity to store additional data in container instances.

It can be useful to be able to store additional information in containers returned by extender methods.
FilesystemExtender: Remove test logging from getFstabList()
FilesystemExtender: Do not use goldfish files on non-emulator devices
getFstabList() could return the wrong device if we except goldfish files on regular devices. These files is used on enulators.
Add new Common class