Fix import docker system from compute k8s files.

Change-Id: Ie72f24548886d1619381bd39dd2cefe17b93b8ad
diff --git a/classes/cluster/k8s-aio-calico/kubernetes/compute.yml b/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
index 4c03619..ae000b0 100644
--- a/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
+++ b/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
@@ -1,5 +1,5 @@
 classes:
-- system.linux.system.repo.docker
+- system.linux.system.repo.docker_legacy
 - system.kubernetes.pool.cluster
 - system.linux.network.hosts
 - system.salt.minion.cert.k8s_client