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/templates/dashboard/clusterrole.yaml

@@ -0,0 +1,58 @@
+{{- if and .Values.dashboard.enabled .Values.clusterInstall }}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "argo-rollouts.fullname" . }}-dashboard
+  labels:
+    app.kubernetes.io/component: {{ .Values.dashboard.component }}
+    {{- include "argo-rollouts.labels" . | nindent 4 }}
+rules:
+  - apiGroups:
+      - argoproj.io
+    resources:
+      - rollouts
+      - rollouts/status
+      - rollouts/finalizers
+    verbs:
+      - get
+      - list
+      - watch
+      - update
+      - patch
+  - apiGroups:
+      - argoproj.io
+    resources:
+      - analysisruns
+      - analysisruns/finalizers
+      - experiments
+      - experiments/finalizers
+    verbs:
+      - create
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - argoproj.io
+    resources:
+      - analysistemplates
+      - clusteranalysistemplates
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - apps
+    resources:
+      - replicasets
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - ""
+    resources:
+      - pods
+    verbs:
+      - list
+      - watch
+{{- end }}