DDO-3517: cutover Data Repo to ESO

[katiewelch]

This is the 5th of 5 PRs to migrate data repo to ESO from Vault. This PR and DDO-3517 in terra-helmfile will cutover data repo to use ESO rather than Vault.

This PR removes the functionality of parsing and creating secrets from Vault from the data repo chart. At this point (due to the terra-helmfile PR), there will already be no Vault secrets in datarepo and it will be using ESO.

This repo (datarepo-helm) will hold the create-secret-manager-secret chart while terra-helmfile will hold the values.

This PR was tested by using the datarepo-helm-definitions repo. Using Olivia's setup, I pointed the chart to my local updated version of the create-secret-manager-secrets chart, after updating the values file in the definitions repos. I also pointed the values to my local versions of the terra-helmfile values files for dev, staging, prod, and BEEs.

helmfile.yaml:

# helm releases to be deployed
releases:
  - name: ok-jade-create-secret-manager-secret    # release name
    namespace: ok   # target namespace
    createNamespace: true
    #chart: datarepo-helm/create-secret-manager-secret   # chart name    
    chart: /Users/welchkat/Documents/src/datarepo-helm/charts/create-secret-manager-secret   # chart name
    missingFileHandler: Warn
    values:
      #- create-secret-manager-secret.yaml      # Value files passed via --values
      - /Users/welchkat/Documents/src/terra-helmfile/values/app/datarepo/live/dev.yaml

After running helmfile apply, for each iteration of my local chart and values files, I confirmed the output matches what I expect.

[em-may]

godspeed