Test container is planned to test codezero microkernel extensively.
With these changes, everything is there to develop a full-featured test suite.
It also exemplifies how a new container type can be added to the system.
(cherry picked from commit f21fa53df421bfc8eeeaa096c89b98beed436c60)
Access permission bits are required eventually but currently are
not a critical concern and yet they complicate configuration. For
sake of simplicity they are removed to be added later on when
absolutely needed.
