Azure Ubuntu vm - Update the user's ssh key
az account set --subscription subscriptionId
az vm user update --resource-group TargetResourceGroup --name NameOfVM --username NameOfAdmin --ssh-key-value ~newkey.pub
az account set --subscription subscriptionId
az vm user update --resource-group TargetResourceGroup --name NameOfVM --username NameOfAdmin --ssh-key-value ~newkey.pub