Allow Repeated Helm Deployments

[mcquinne]

A simple quality of life change: Using helm upgrade --install allows make deploy to be run multiple times as changes are made locally.

What I am changing

• Using helm install in the makefile prevents one from running make deploy multiple times (helm install fails if the release already exists)
• This makes it difficult to iterate or experiment locally, e.g. to tweak envVars or add to initdb-data

How I did it

• Switching to helm upgrade --install will upgrade an existing helm release or install it if it does not yet exist
• See: https://helm.sh/docs/helm/helm_upgrade/

How you can test it

• Run make deploy or make minikube to install the system into a k8s cluster
• Make a local change, e.g. update an envVar in #helm-chart/values.yaml
• Run make deploy or make minikube again
• The resources of the helm release should be updated without error

Related Issues

• N/A