fix(argo-rollouts): plugin block rendering was incorrect (#3014)

* Fix the plugin block rendering

Signed-off-by: Robert Macaulay <robert.macaulay@gmail.com>

* fixed chart.yaml

Signed-off-by: Robert Macaulay <robert.macaulay@gmail.com>

* Update charts/argo-rollouts/Chart.yaml

Co-authored-by: Marco Maurer (-Kilchhofer) <mkilchhofer@users.noreply.github.com>
Signed-off-by: Robert Macaulay <robert.macaulay@gmail.com>

---------

Signed-off-by: Robert Macaulay <robert.macaulay@gmail.com>
Co-authored-by: Marco Maurer (-Kilchhofer) <mkilchhofer@users.noreply.github.com>

charts/argo-rollouts/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: v1.7.2
 description: A Helm chart for Argo Rollouts
 name: argo-rollouts
-version: 2.37.7
+version: 2.37.8
 home: https://github.com/argoproj/argo-helm
 icon: https://argoproj.github.io/argo-rollouts/assets/logo.png
 keywords:
@@ -18,5 +18,5 @@ annotations:
     fingerprint: 2B8F22F57260EFA67BE1C5824B11F800CD9D2252
     url: https://argoproj.github.io/argo-helm/pgp_keys.asc
   artifacthub.io/changes: |
-    - kind: added
-      description: add description for manual secret creation
+    - kind: fixed
+      description: Fixed rendering of plugins in the ConfigMap

charts/argo-rollouts/templates/controller/configmap.yaml

@@ -8,8 +8,10 @@ metadata:
     {{- include "argo-rollouts.labels" . | nindent 4 }}
 data:
   {{- with .Values.controller.metricProviderPlugins }}
-    {{- toYaml . | nindent 2 }}
+  metricProviderPlugins: |-
+    {{- toYaml . | nindent 4 }}
   {{- end }}
   {{- with .Values.controller.trafficRouterPlugins }}
-    {{- toYaml . | nindent 2 }}
+  trafficRouterPlugins: |-
+    {{- toYaml . | nindent 4 }}
   {{- end }}