Define apt_mk_version as contrail container tag version for k8s

Closes-bug: #PROD-24515

Change-Id: Icd6fa11ec7618eef9e6c08be8129cdf8d738e336
diff --git a/defaults/linux_system_repo.yml b/defaults/linux_system_repo.yml
index 81497c6..1194dce 100644
--- a/defaults/linux_system_repo.yml
+++ b/defaults/linux_system_repo.yml
@@ -38,3 +38,4 @@
     linux_system_repo_mcp_glusterfs_version_number: "3.8"
     linux_system_repo_mcp_saltstack_version_number: "${_param:salt_version}"
     linux_system_repo_mcp_ceph_codename: luminous
+    linux_repo_contrail_component: oc40