Consolidate third party stuff and limit pep8 to only look at hpssic
 - Put all the virtualenv and locally installed stuff in ./local (not under
   hpssic)
 - Have test_pep8 run down the hpssic tree (thus avoiding local so it doesn't
   see third party .py files)

Change-Id: Ic334787e12a8dc19e8b7daa816fd8cfcffaa504f