Gitlab Runner Integration with Gitlab

• Gitlab Runners are not deployed as part of CI testing.
• Gitlab Runners don't connect to Gitlab by default.

Per the Gitlab docs, you can provide a secret to gitlab: (copied from chart/docs/install/secrets.md)

GitLab Runner secret

Replace <name> with the name of the release.

kubectl create secret generic <name>-gitlab-runner-secret --from-literal=runner-registration-token=$(head -c 512 /dev/uran

and then referencce the secret in

global:
  ## GitLab Runner
  ## Secret created according to doc/installation/secrets.md#gitlab-runner-secret
  ## If allowing shared-secrets generation, this is OPTIONAL.
  runner:
    registrationToken: {}
      # secret:

In GitlabRunners:

runnerRegistrationToken: ""

We need to identify:

1. Provide an API to pass in this secret value and create the secret in Gitlab and then configure Gitlab Runners to use it
2. Autogenerate a secret token to create secret, but ensure that we don't re-create this value each time helm deploys.
3. Pass the secret token to gitlab runners in the secret Values so its not visible in the HelmRelease.