This patch set standardizes the Pegleg directory
structure because of the following reasons:
1) src/bin/pegleg is not necessary and only makes
building (e.g. documentation building) and running
of tox targets unnecessarily difficult.
2) src/bin/pegleg is a Java-like standard that
bears no relevance to Python.
Change-Id: I37d39d3d6186b92f8fbfe234221c9e44da48cf10