Update terraform scripts to improve deployment

[iameskild]

• The load-balancer-annotations via the terraform_overrides in ingress has a bug and is not done correctly (needs to be added to metadata instead), see here.
• We need an option to disable TLS on the 443 port for traefik. Need to optionally disable this, see here.
• At times, we are unable to continue with install clusterRole "jupyterhub-user-scheduler" in namespace in zero to jupyterhub helm chart deployment because they have a cluster with multiple jupyterhub's already deployed. We will need to add the project name to the helm chart deployment here.