Why does static network configuration in kickstart not applied after installation in Red Hat Enterprise Linux 7?

Issue

• The kickstart file includes %pre section to generate /tmp/buildnet with the static network configuration.
• The kickstart file is in HTTP server.
• After installation, the static network configuration is not reflected. It's using dhcp with BOOTPROTO=dhcp in ifcfg-* configuration file.
• Also the files /etc/sysconfig/network-scripts/ifcfg-eth0 contains entries with 0 appended as follows which makes network down as well.

    IPADDR0=192.168.0.1
    PREFIX0=24
    GATEWAY0=192.168.0.254