CORD-1951 fix and cleanup vEG synchronizer

Change-Id: I938edf40da13192614fa16ecf350bd18bea84f8d
(cherry picked from commit 8e56c00757e05a18e059772a5524c982d49781f9)
diff --git a/xos/veg.m4 b/xos/veg.m4
index 8e2a289..309db0b 100644
--- a/xos/veg.m4
+++ b/xos/veg.m4
@@ -49,4 +49,11 @@
             docker_insecure_registry:
                 type: boolean
                 required: false
-                description: If true, then the hostname:port specified in docker_image_name will be treated as an insecure registry
\ No newline at end of file
+                description: If true, then the hostname:port specified in docker_image_name will be treated as an insecure registry
+
+    tosca.nodes.VEGTenant:
+        derived_from: tosca.nodes.Root
+        description: >
+            A VEG Tenant.
+        properties:
+            xos_base_tenant_props