chore: set visibility of output variables for redis-cluster (#307)

Co-authored-by: Sangini Garg <[email protected]>

Author: sANGINI2004

modules/redis-cluster/metadata.display.yaml

@@ -94,3 +94,7 @@ spec:
         zone_distribution_config_zone:
           name: zone_distribution_config_zone
           title: Zone Distribution Config Zone
+    runtime:
+      outputs:
+        discovery_endpoints:
+          visibility: VISIBILITY_ROOT