Add local.conf for profiling stuff

1) Add custom repositories for nova, cinder and their python clients
2) Add custom repository oslo.messaging (osprofiler notifier & cross
service support)
3) Add custom repository for ceilometer (with plugin for collecting
notifications)
4) Install rally with devstack

Change-Id: Ifc9d5a8f6b3db7da4adde2dd4de33ef60dd275c6