added system.linux.system.repo.mcp.salt where missing

Change-Id: Iec33efa97a7638437ddfe280ec3f2c69889e791f
diff --git a/classes/cluster/virtual-mcp-ocata-cicd/stacklight/server.yml b/classes/cluster/virtual-mcp-ocata-cicd/stacklight/server.yml
index 2902d76..a9e8625 100644
--- a/classes/cluster/virtual-mcp-ocata-cicd/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp-ocata-cicd/stacklight/server.yml
@@ -2,6 +2,7 @@
 - system.linux.system.repo.influxdb
 - system.linux.system.repo.elasticsearch
 - system.linux.system.repo.kibana
+- system.linux.system.repo.docker
 # Needed to install Galera packages
 - system.linux.system.repo.mcp.openstack
 - system.elasticsearch.server.cluster