Missing document for NFV parameters deprecation, naming changes and also how to update NFV parameters during FFU.

https://docs.redhat.com/en/documentation/red_hat_openstack_platform/17.1/html/framework_for_upgrades_16.2_to_17.1/preparing-network-functions-virtualization-nfv#network_functions_virtualization_nfv_environment_files

Need to improve FFU dpcumentation guide for NFV OVS DPDK, SRIOV and also CPU pinning parameters update perspective ( including naming changes and deprecation details).