Correct summary bug in python wrapper

The summary funciton in the python wrapper could have returned
a value which was not a dict type.

Added unit test to validate the receive all funciton in helpers.

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: Ibed078b2a171fd3f8bd8bec51d4724e735337282
6 files changed