Added reference to control server

edge-1601-dc3-dc4/inventory

diff --git a/edge-1601-dc3-dc4/inventory b/edge-1601-dc3-dc4/inventory
index 062c508..892eead 100644
--- a/edge-1601-dc3-dc4/inventory
+++ b/edge-1601-dc3-dc4/inventory
@@ -1,3 +1,4 @@
+[tag_Name_edge_1601_dc3_n0]
 [tag_Name_edge_1601_dc3_n1]
 [tag_Name_edge_1601_dc3_n2]
 [tag_Name_edge_1601_dc3_n3]
@@ -23,6 +24,9 @@
 [tag_Name_edge_1601_dc4_n11]
 [tag_Name_edge_1601_dc4_n12]
 
+[tag_Name_edge_1601_dc3_n0:vars]
+ansible_user = centos
+
 [tag_Name_edge_1601_dc3_n3:vars]
 zk_observer=true