Bug fix pyparsing upgrade for python quantum client

The python-quantumclient package may not include the correct
version of pyparsing in its dependencies, requiring us to
ensure that it is upgraded to the latest version prior to
usage

Change-Id: Id0064596ec277fe5d54441ab316ee146acc75f5f
Added conductor's use_local flag

This allows one to enable/disable conductor.

Change-Id: Icea9b3f8de53fffa632d5ff47986ab7a50661864