feat(argo-rollouts): add dashboard (#798)

* feat(argo-rollouts): add dashboard deployment and service

credit: the implemention is inspired by the work from
    Andrii Perenesenko <andrii.perenesenko@gmail.com>.

Signed-off-by: Hui Kang <hui.kang@salesforce.com>

* Apply suggestions from code review

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

* Add components to selectlabels

Signed-off-by: Hui Kang <hui.kang@salesforce.com>

* Bump major version and add upgrading note

Signed-off-by: Hui Kang <hui.kang@salesforce.com>

* fix: Documentation on dashboard values, change annotations

Signed-off-by: Hui Kang <hui.kang@salesforce.com>

* feat: Enable dashboard during chart testing

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

Co-authored-by: Hui Kang <hui.kang@salesforce.com>
Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-rollouts/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "v1.0.2"
 description: A Helm chart for Argo Rollouts
 name: argo-rollouts
-version: 1.0.4
+version: 2.0.0
 icon: https://argoproj.github.io/argo-rollouts/assets/logo.png
 home: https://github.com/argoproj/argo-helm
 maintainers:
@@ -11,5 +11,4 @@ maintainers:
   - name: jessesuen
 annotations:
   artifacthub.io/changes: |
-    - "[Fixed]: Add missing liveness and readiness probes"
-    - "[Changed]: Fix icon url"
+    - "[Added]: Dashboard manifests"