fix(Traefik Hub): fail when upgrading with --reuse-values

Author: mloiseleur

traefik/tests/requirements-config_test.yaml

@@ -176,7 +176,7 @@ tests:
         tag: v3.0.0
       tracing:
         safeQueryParams:
-         - foo
+          - foo
     asserts:
       - failedTemplate:
           errorMessage: "ERROR: safeQueryParams is a feature only available for traefik >= v3.1.0."
@@ -282,3 +282,10 @@ tests:
     asserts:
       - failedTemplate:
           errorMessage: "ERROR: consulCatalogEnterprise provider is a feature only available for traefik-hub >= v3.6.0."
+  - it: should fail when not using default values
+    set:
+      hub:
+        namespaces: null
+    asserts:
+      - failedTemplate:
+          errorPattern: "namespaces is required"

traefik/values.schema.json

@@ -596,6 +596,9 @@
                     "type": "object"
                 }
             },
+            "required": [
+                "namespaces"
+            ],
             "type": "object"
         },
         "image": {

traefik/values.yaml

@@ -598,8 +598,8 @@ tracing:  # @schema additionalProperties: false
 
 # -- Global command arguments to be passed to all traefik's pods
 globalArguments:
-- "--global.checknewversion"
-- "--global.sendanonymoususage"
+  - "--global.checknewversion"
+  - "--global.sendanonymoususage"
 
 # -- Additional arguments to be passed at Traefik's binary
 # See [CLI Reference](https://docs.traefik.io/reference/static-configuration/cli/)
@@ -942,7 +942,7 @@ hub:
   # It enables API Gateway.
   token: ""
   # -- By default, Traefik Hub provider watches all namespaces. When using `rbac.namespaced`, it will watch helm release namespace and namespaces listed in this array.
-  namespaces: []
+  namespaces: []  # @schema required:true
   apimanagement:
     # -- Set to true in order to enable API Management. Requires a valid license token.
     enabled: false