Added apt repo support

This repo contains all opencontrail packages.

Note: opencontrail repo only have packages for precise at this time.
Only certain packages are there for trusty. Per contrail team, packages
for trusty would be added to the ppa soon.
Added contrail config services

Added contrail config services which includes

1. contrail api server
2. contrail discovery server
3. contrail svc-monitor server
4. contrail schema transformer