Add container.get() which removes the duplication of container.inspect() in every property, and provides a nicer interface for querying container data.

Signed-off-by: Daniel Nephin <dnephin@gmail.com>
Fix some tests failing with docker 1.1.2 and add a comment to recreate_container() explaining what it does.

Signed-off-by: Daniel Nephin <dnephin@gmail.com>