feat(argo-rollouts): Support extraArgs for controller and dashboard (#978)

* feat(argo-rollouts): Support extraArgs for controller and dashboard

Adding support for additional arguments that are passed to the controller and the dashboard.
Following the pattern of other Argo charts by re-using the name `extraArgs` for the value.

Refs: https://github.com/argoproj/argo-helm/issues/969
Signed-off-by: Sebastian J <zeeman@zeeman.de>

* Update charts/argo-rollouts/templates/controller/deployment.yaml

Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>
Signed-off-by: Sebastian J <zeeman@zeeman.de>

* Update charts/argo-rollouts/templates/dashboard/deployment.yaml

Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>
Signed-off-by: Sebastian J <zeeman@zeeman.de>

* PR comments

Signed-off-by: Sebastian J <zeeman@zeeman.de>

* Fix newly added parameters in README

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* Fix changelog keyword

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-rollouts/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "v1.1.0"
 description: A Helm chart for Argo Rollouts
 name: argo-rollouts
-version: 2.2.1
+version: 2.3.0
 icon: https://argoproj.github.io/argo-rollouts/assets/logo.png
 home: https://github.com/argoproj/argo-helm
 maintainers:
@@ -11,4 +11,4 @@ maintainers:
   - name: jessesuen
 annotations:
   artifacthub.io/changes: |
-    - "[Changed]: Reorganize files in repo, move controller-specific things into subfolder."
+    - "[Added]: Support for extraArgs for controller and dashboard"