anchor.diff:  <1> You can specify a different valid AMI.
   <2> You can customize the volume characteristics for the MachineSet. See the AWS
   documentation.
  -<3> Do not modify this section.
  +<3> Do not modify this parameter value.
   <4> Specify a valid `instanceType` for the AMI that you specified.
   
   . Create the new `MachineSet`:
  
positive.code:   replicas: 1
    selector:
      matchLabels:
        machine.openshift.io/cluster-api-cluster: cluster_name
        machine.openshift.io/cluster-api-machineset: <cluster_name>-<machine_label>-<AWS-availability-zone> <1>
    template:
      metadata:
        creationTimestamp: null
        labels:
          machine.openshift.io/cluster-api-cluster: <cluster_name>
          machine.openshift.io/cluster-api-machine-role: <machine_label>
          machine.openshift.io/cluster-api-machine-type: <machine_label>
          machine.openshift.io/cluster-api-machineset: <cluster_name>-<machine_label>-<AWS-availability-zone> <1>
  ...
  
negative.code:   creationTimestamp: 2019-02-15T16:32:56Z <1>
    generation: 1 <1>
    labels:
  <<<<<<< HEAD
      machine.openshift.io/cluster-api-cluster: <cluster_name> <2>
  =======
      machine.openshift.io/cluster-api-cluster:  <infrastructure_id> <2>
  >>>>>>> bug 1689241 updating the machineset definition
      machine.openshift.io/cluster-api-machine-role: <machine_label> <3>
      machine.openshift.io/cluster-api-machine-type: <machine_label> <3>
    name: <cluster_name>-<machine_label>-<AWS-availability-zone> <3> <4>
    namespace: openshift-machine-api
    resourceVersion: "9249" <1>
    selfLink: /apis/machine.openshift.io/v1beta1/namespaces/openshift-machine-api/machinesets/ <infrastructure_id>-<machine_label>-<AWS-availability-zone> <1>
    uid: 59ba0425-313f-11e9-861e-0a18047f0a28 <1>
  ----
  <1> Remove this line.
  <2> Do not change the `<infrastructure_id>`.
  <3> For each `<machine_label>` instance, specify the name of the new MachineSet.
  <4> Ensure that the AWS availability zone is correct in each instance of the
  `<AWS-availability-zone>` parameter.
  