Add lsb-release to BuildRequires for contrail packages
Add lsb-release to BuildRequires for contrail packages

Recently code has been added to use lsb_release to check the release in
debian/contrail/debian/rules file.

Change-Id: Ia9ac455955cbcbf54c41cb7bade6c3b93558b7d9
Closes-Bug: #1659054

Juniper/contrail-packages,Juniper/contrail-packages