(maint) add support for redhat-8-arm64
(maint) add support for redhat-8-arm64

redhat-8-arm64 ami is using NetworkManager 1.22 which is using
nettools plugin by default and provides incomplete dhcp information
(https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/426)

puppetlabs/facter,puppetlabs/facter,puppetlabs/facter