Investigate Enabling HorizontalPodAutoscaler Resource in Redis chart by default

The Redis chart comes with a couple of HorizontalPodAutoscaler resources and we already deploy the chart with multiple replcas by default.

Test deploying Redis with this HorizontalPodAutoscaler enabled via replica.autoscaling.enabled and see if any of the other autoscaling or replica values need to be tuned or altered for better performance.

If no issues or other dependencies are required, enable this HorizontalPodAutoscaler for the package in BigBang so it is enabled by default for redis replica pods.

• Deploy and test with the replica HorizontalPodAutoscaler resource enabled
• Document any caveats or recommendations within this issue
• Enable this autoscaling value in BigBang pass-through values where redis is deployed if no large caveats or recommendations are required

Investigation Notes:

Redis HPA is now enabled for argocd and authservice (not gitlab due to ... gitlab). I didn't see any other packages with the redis chart dependency.