ArgoCD - Support externally managed Redis

Feature Request

Why

PartyBus has started to leverage AWS managed Elasticache to avoid downtime during upgrades while Redis cycles. The chart currently doesn't natively support pointing ArgoCD to an external Redis. We worked around it by utilizing extraArgs like so:

apiVersion: v1
kind: ConfigMap
metadata:
    name: argocd
    namespace: bigbang
data:
    values.yaml: |-
      addons:
        argocd:
          enabled: true
          values:
            redis:
              enabled: false
            redis-bb:
              enabled: false
            global: {}
            controller:
              extraArgs:
              - "--redis"
              - "external-redis-url.amazonaws.com:6379"
            repoServer:
              extraArgs:
              - "--redis"
              - "external-redis-url.amazonaws.com:6379"
            server:
              extraArgs:
              - "--redis"
              - "external-redis-url.amazonaws.com:6379"
              - "--insecure"

Proposed Solution

It'd be nice to have a way through the BigBang umbrella to be able to specify an external Redis in a single location and have the extraArgs be set for us.

added teamXForce label

added BB Customer Issues argocd priority5 labels

set weight to 3

changed iteration to Big Bang Iterations Feb 22, 2022 - Mar 7, 2022

changed milestone to %1.29.0

assigned to @snekcode

added statusdoing label

One configuration to rule them all

addons:
  argocd:
    enabled: true
    values:
      redis-bb:
        enabled: false. # to disable spinning up argo redis services
      redis:
        enabled: false  # to disable spinning up argo redis services
        external: "external-redis-url.amazonaws.com"
        servicePort: 6379

created branch 1083-argocd-support-externally-managed-redis to address this issue

mentioned in merge request !1424 (merged)

changed milestone to %1.30.0

changed iteration to Big Bang Iterations Mar 8, 2022 - Mar 21, 2022

closed with merge request !1424 (merged)

mentioned in commit f616a454

removed statusdoing label