double commit in mainline. Original commit in R1.10:ddd01f7b17f0e15a6dadeabfbe2ada26d1d3e83e
Adding nova packages packaging in ubuntu/icehosue to use contrail/icehosue repo to build all nova-packages locally.
This will enable all VPC features in ubuntu/icehouse build in mainline.
Removed stock nova-packages from depends_packages.cfg and added in contrail_packages.cfg

Change-Id: I1381c69f3a8d15fe6049579e34ad04ab0521bbdb
Merge "double commit in mainline. Original commit in R1.10:ddd01f7b17f0e15a6dadeabfbe2ada26d1d3e83e Adding nova packages packaging in ubuntu/icehosue to use contrail/icehosue repo to build all nova-packages locally. This will enable all VPC features in ubuntu/icehouse build in mainline. Removed stock nova-packages from depends_packages.cfg and added in contrail_packages.cfg"