Repair build for arm

and make sure CI breaks if arm is broken

selinux/selinux_linux_amd64.go

@@ -0,0 +1,11 @@
+package selinux
+
+// #cgo pkg-config: libselinux libsepol
+// #include <selinux/selinux.h>
+import "C"
+
+func InitializeSelinux() (int, error) {
+	enforce := C.int(0)
+	ret, err := C.selinux_init_load_policy(&enforce)
+	return int(ret), err
+}