This patch removes these lintian warnings:
Warning R0205: Class 'X' inherits from object,
can be safely removed from bases in python3 (useless-object-inheritance)
This eases testing of option values inside the code. This instance
is implemented as the read-only copy of the obtained 'options' object,
so callers won't be able to modify its contents.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
