The label [node.kubernetes.io/instance-type=] does not get applied with a cluster that comes from an older version 4.12< and does not get updated in case of a change (upgrade/downgrade) of an instance in the cloud provided.

[1st Scenario]
Install OCP 4.12 upgrade to 4.14 the label is not present while on new node added to the cluster will have the label.

[2nd Scenario]
On 4.14> upgrade or downgrade the instance, the label will still have the old description of the previous instance.

- Nodes coming from older versions will miss this labels
- The label does not get reconciled with the actual instance type.

- After cluster updated all the nodes will have this label applied
- After a change of instance the label will be in sync with the running instance

- Tested on VMware but can affect all other cloud providers.
- https://github.com/openshift/kubernetes-cloud-provider/commit/8126d41b711ef1d4dc2db7a9ebe3e839e426e5aa#diff-de499ed08295a0dff6e4a0feb59d15bb9f70bd4dc2316390fb109e0cea0e4616R291