Explicitly install python-netaddr rpm
Explicitly install python-netaddr rpm

Otherwise on RHEL there is then conflict between files installed
by pip and files installed by rpm.

dmsimard/instack-undercloud,rdo-management/instack-undercloud,agroup/instack-undercloud,dmsimard/instack-undercloud,agroup/instack-undercloud,dpkshetty/instack-undercloud,eprasad/instack-undercloud,bcrochet/instack-undercloud,dpkshetty/instack-undercloud,rdo-management/instack-undercloud,eprasad/instack-undercloud,bcrochet/instack-undercloud