Simplify seccomp validation #367

Job	Run time
build (centos:7, sed -i 's,^mirrorlist=,#,; s,^#baseurl=http://mirror\.centos\.org/centos/$releas...	1m 21s
build (almalinux:8, yum install -y kernel-devel kernel gcc make elfutils-libelf-devel)	1m 35s
build (rockylinux:8, yum install -y kernel-devel kernel gcc make elfutils-libelf-devel)	1m 58s
build (quay.io/centos/centos:stream9, dnf install -y --nobest kernel-devel-matched gcc make)	2m 7s
build (fedora:latest, dnf install -y kernel-devel kernel gcc make elfutils-libelf-devel)	2m 1s
build (alt:sisyphus, apt-get update; apt-get install -y kernel-headers-modules-un-def gcc make li...	53s
build (registry.opensuse.org/opensuse/tumbleweed, zypper -n install -y gcc make kernel-default-de...	57s
build (registry.opensuse.org/opensuse/leap, zypper -n install -y gcc make kernel-default-devel ta...	1m 7s
	11m 59s

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