scripts: posix_net_conf.sh: Exclude CPU0 in RDS config for EN.
scripts: posix_net_conf.sh: Exclude CPU0 in RDS config for EN.

Signed-off-by: Vlad Zolotarov <976c0f8d0852ed6439ad273880b400a75a7c41d0@cloudius-systems.com>

syuu1228/seastar,syuu1228/seastar,syuu1228/seastar,kjniemi/seastar,avikivity/seastar,scylladb/seastar,scylladb/scylla-seastar,avikivity/seastar,acbellini/seastar,scylladb/scylla-seastar,scylladb/seastar,dreamsxin/seastar,cloudius-systems/seastar,leejir/seastar,scylladb/scylla-seastar,leejir/seastar,kjniemi/seastar,acbellini/seastar,printedheart/seastar,leejir/seastar,scylladb/seastar,sjperkins/seastar,dreamsxin/seastar,cloudius-systems/seastar,printedheart/seastar,acbellini/seastar,kjniemi/seastar,dreamsxin/seastar,sjperkins/seastar,sjperkins/seastar,avikivity/seastar,cloudius-systems/seastar,printedheart/seastar