Squash to "selftests/bpf: Add bpf scheduler test"

create_netns() is updated in "bpf-next add netns helpers" series,
sched_init() needs to be updated too.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>

tools/testing/selftests/bpf/prog_tests/mptcp.c

@@ -434,7 +434,7 @@ static struct nstoken *sched_init(char *flags, char *sched)
 {
 	struct nstoken *nstoken;
 
-	nstoken = create_netns();
+	nstoken = create_netns(NS_TEST);
 	if (!ASSERT_OK_PTR(nstoken, "create_netns"))
 		return NULL;