AETHER-2529 aether-roc-umbrella 3 prometheus and 2 prom-label-proxy

Change-Id: I01c4f60bfa265156cda88ffa1e8b73c5232c22d8
diff --git a/aether-roc-gui/values.yaml b/aether-roc-gui/values.yaml
index 7337370..61b8e8c 100644
--- a/aether-roc-gui/values.yaml
+++ b/aether-roc-gui/values.yaml
@@ -10,7 +10,7 @@
 
 image:
   repository: onosproject/aether-roc-gui
-  tag: v0.7.26
+  tag: v0.7.28
   pullPolicy: IfNotPresent
   pullSecrets: []