Use setup.py to install config data to python library

data under conf/ will be used by all test cases as the general
config data. Each unittest will override config data under this
dir with their specific attributes. This CL is to include config
data in the python lib.

Change-Id: I53b55591c7a70fd0a9f6634d509df6bfdeb604bd
Merge "Use setup.py to install config data to python library" into dev/experimental