Added argocd to umbrella

chart/templates/argocd/argocd-helmrelease.yaml

+{{- if .Values.addons.argocd.enabled }}
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: argocd
+  namespace: {{ .Release.Namespace }}
+spec:
+  targetNamespace: argocd
+  chart:
+    spec:
+      chart: chart
+      interval: 5m
+      sourceRef:
+        kind: GitRepository
+        name: argocd
+        namespace: {{ .Release.Namespace }}
+
+  {{- with .Values.flux }}
+  interval: {{ .interval }}
+  test:
+    enable: false
+  install:
+    remediation:
+      retries: {{ .install.retries }}
+  upgrade:
+    remediation:
+      retries: {{ .upgrade.retries }}
+      remediateLastFailure: true
+    cleanupOnFail: true
+  rollback:
+    timeout: {{ .rollback.timeout }}
+    cleanupOnFail: {{ .rollback.cleanupOnFail }}
+  {{- end }}
+
+  valuesFrom:
+    - name: values
+      kind: Secret
+      valuesKey: "argocd.yaml"
+  values:
+    createNamespace: false
+    imagePullSecrets:
+      - name: private-registry
+  dependsOn:
+  - name: istio
+    namespace: {{ .Release.Namespace}}
+  {{- if .Values.monitoring.enabled }}
+  - name: monitoring
+    namespace: {{ .Release.Namespace }}
+  {{- end }}
+{{- end }}
\ No newline at end of file