Ubuntu image version update
Ubuntu image version update

knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates,knithinc/azure-quickstart-templates