Solve the upgrade issue, In 1.10, setup.sh was packaged in contrail-setup and contrail-install-packages
So when upgrading contrail-install-packages, it will fail, we will need to use rpm -iU --force to upgrade
To avoid this and use yum localinstall, post section is added to swap the setup.sh

Change-Id: Ifabc7df955ac66a58e131faa9a46e4bec9f77f8a
Closes-Bug: 1394786
Merge "Solve the upgrade issue, In 1.10, setup.sh was packaged in contrail-setup and contrail-install-packages So when upgrading contrail-install-packages, it will fail, we will need to use rpm -iU --force to upgrade To avoid this and use yum localinstall, post section is added to swap the setup.sh" into R2.0