Fixes for Murano Dashboard
Fixes for Murano Dashboard

  * Add possibility to specify protocol for Murano Dashboard
    If we are running Murano under SSL on load-balancer or
    nginx we will get the following error:

    `Error: 400 The plain HTTP request was sent to HTTPS port: 400 Bad`
    `Request: The plain HTTP request was sent to HTTPS port: nginx`

    To avoid this we need to switch from hardcoded http to https.

  * If we are going to use self-signed certificates we should set
    MURANO_API_INSECURE = True
    https://docs.openstack.org/developer/murano/administrator-guide/deploy_murano/configure_ssl.html#configure-ssl-for-the-dashboard

Martin819/salt-formula-horizon,Martin819/salt-formula-horizon,Martin819/salt-formula-horizon