[BB-844] - SSO Support for kiali, jaeger, prometheus and alertmanager via Authservice and HAProxy

Adding in support for placing SSO in front of apps (kiali/jaeger/prometheus/alertmanager automatically via umbrella) using the following options:

monitoring:
  sso:
    enabled: false
    prometheus:
      client_id: prometheus
      client_secret: "change_me"
    alertmanager:
      client_id: alertmanager
      client_secret: "change_me"
istio:
  sso:
    enabled: false
    kiali:
      client_id: kiali
      client_secret: "change_me"
    jaeger:
      client_id: jaeger
      client_secret: "change_me"