tools: Hide new commands behind experimental flag

Hide the commands behind a flag so we can continue doing releases while
the commands aren't ready.
diff --git a/tools/kmod.c b/tools/kmod.c
index 5ebe70a..c9d2cc8 100644
--- a/tools/kmod.c
+++ b/tools/kmod.c
@@ -40,10 +40,13 @@
 
 static const struct kmod_cmd *kmod_cmds[] = {
 	&kmod_cmd_help,
-	&kmod_cmd_insert,
 	&kmod_cmd_list,
-	&kmod_cmd_remove,
 	&kmod_cmd_static_nodes,
+
+#ifdef ENABLE_EXPERIMENTAL
+	&kmod_cmd_insert,
+	&kmod_cmd_remove,
+#endif
 };
 
 static const struct kmod_cmd *kmod_compat_cmds[] = {