* Use flexible orchestration mode. Azure has started to recommend this
mode because it allows interacting with VMSS instances like regular VMs
via the CLI or via the Azure Portal
* Add options to allow workers nodes to use ephemeral local disks
* Add `controller_disk_type` and `controller_disk_size` variables
* Add `worker_disk_type`, `worker_disk_size`, and `worker_ephemeral_disk` variables
* Describe kube-apiserver load balancing on each platform
* Describe HTTP/S Ingress load balancing on each platform
* Describe TCP/UDP load balancing apps on each platform
(some clouds don't support UDP)
* Describe firewall customization (e.g. for TCP/UDP apps)
* Update IPv6 status for each platform
* Collate upstream rules, alerts, and dashboards and tune for use
in Typhoon
* Previously, a well-chosen (but older) set of rules, alerts, and
dashboards were maintained to reflect metric name changes
* Adapt the coreos/prometheus-operator alerting rules for Typhoon,
https://github.com/coreos/prometheus-operator/tree/master/contrib/kube-prometheus/manifests
* Add controller manager and scheduler shim services to let
prometheus discover them via service endpoints
* Fix several alert rules to use service endpoint discovery
* A few rules still don't do much, but they default to green
