Adjust virtlet-ds.yaml and bump virtlet to 1.0.3

Change-Id: If88c0335bed215426bac630e9d0bdbe5b39559b7
diff --git a/tests/pillar/master_cluster.sls b/tests/pillar/master_cluster.sls
index 9e8afa2..91c1ff3 100644
--- a/tests/pillar/master_cluster.sls
+++ b/tests/pillar/master_cluster.sls
@@ -40,7 +40,7 @@
         hosts:
         - cmp01
         - cmp02
-        image: mirantis/virtlet:v1.0.0
+        image: mirantis/virtlet:v1.0.3
     monitoring:
       backend: prometheus
   master: