kubeadm: cleanup upgrade from no-TLS etcd to TLS etcd

Create managed instance groups for nodes in parallel

Avoid copying PriorityConfig and SchedulerExtender structs for every node while running priority functions

Update a comment in cadvisor boot function

Use start times kubelet startup

Minor copy edits to the 1.13 changelog

Fixes nil pointer panic on autoscaling types conversion 

Signed-off-by: yuexiao-wang <wang.yuexiao@zte.com.cn>

Fix Azure node's internal IP address

Allow to build docker images offline (do not always use `docker build --pull`)

Make SSH path handling consistent across providers during e2e

Only use the first IP address got from instance metadata. This is
because Azure CNI would setup a list of IP addresses in instance metata,
while only the first one is the Node's IP.

cleanup pkg/ssh

kubeadm: move test utilites out of /test

Remove scheduler "TestGroup" utility.

Fixing address locking in CP fake.

fix WaitForAllNodesSchedulable so it outputs logs when cluster size is small

add CNI_VERSION to build/workspace.bzl, use it to dedupe version

Plumb token and token file through rest.Config

kubeadm: remove kubeadm config print-defaults

enable secured kubelet in hack/local-up-cluster.sh

Use memory metrics from the pod cgroup for eviction ranking

Merge pull request #71597 from marc-sensenich/gh-71595/fix-cloud-controller-manager-azure-delete-nodes

Add check for cloudProvider.InstanceNotFound in Azure VMSS Instance gets

make GetStorageAccesskey func public

remove duplicate word

Signed-off-by: yuexiao-wang <wang.yuexiao@zte.com.cn>

kubeadm: properly umount dirs in /var/lib/kubelet

Update default etcd server to 3.3.10 for kubernetes 1.14

Collapse not shared NSG rules with multiple source ranges

Fix some golint errors for packages in `pkg/kubectl/cmd`

Drop the norecurse flag in  dns tests

util: Refactor Backoff to return the next step rather than sleeping