Also switches to the most recent 64-bit version of OpenSSH for Windows. Tested: PROJECT=${CLOUDSDK_CORE_PROJECT} KUBERNETES_SKIP_CONFIRM=y NUM_NODES=2 \ NUM_WINDOWS_NODES=2 KUBE_GCE_ENABLE_IP_ALIASES=true TEST_CLUSTER=true \ ./cluster/kube-up.sh
Removes all references to 1803, including moving "win1803" directory to just "windows". A single Windows directory suffices for now, if necessary in the future we can shard it into directories for each Windows version. We've been running tests with Windows 1809 nodes for a couple days in our fork without major problems: https://testgrid.k8s.io/google-windows#windows-prototype&width=20. Testing on Azure is already using 1809: https://testgrid.k8s.io/sig-windows#Conformance%20acs-engine%20on%20Azure&width=20.