AETHER-2796 make application.endpoint.port-start not mandatory

Change-Id: I5a4a86850cf06c2f1affe153d0f7faf3261f01f5
diff --git a/aether-roc-umbrella/Chart.yaml b/aether-roc-umbrella/Chart.yaml
index b8b1428..1b4bf21 100644
--- a/aether-roc-umbrella/Chart.yaml
+++ b/aether-roc-umbrella/Chart.yaml
@@ -7,7 +7,7 @@
 description: Aether ROC Umbrella chart to deploy all Aether ROC
 kubeVersion: ">=1.18.0"
 type: application
-version: 1.4.55
+version: 1.4.56
 appVersion: v0.0.0
 keywords:
   - aether
@@ -28,7 +28,7 @@
   - name: config-model-aether-4
     condition: onos-config.models.aether.v4.enabled
     repository: "file://../config-models/aether-4.x"
-    version: 4.0.16
+    version: 4.0.17
   - name: config-model-plproxy
     condition: onos-config.models.plproxy.v1.enabled
     repository: "file://../config-models/plproxy-1.x"