Fix 'package.sh' for new setup.cfg
Fix 'package.sh' for new setup.cfg

Do minor changes to maintain the same .deb and .rpm package names and
ensure 'setup.cfg' does not get overrided.

Change-Id: I3ac12be76d94459707cc0207e6277a4a1703c100

JoeMido/networking-midonet,yamt/networking-midonet,yamt/networking-midonet,JoeMido/networking-midonet