Support e2e armada server auth configs as env variable options

[sync-by-unito]

There are limited ways that auth will be setup for armada for CI and Development. These should be supported as an env var for the armada server component.

For example, ARMADA_CONFIG_AUTH="insecure" this config would automatically be injected https://github.com/armadaproject/armada/blob/master/e2e/setup/insecure-armada-auth-config.yaml

If the user has specified config, this would override this env var.

┆Issue is synchronized with this Jira Task by Unito