Default values kept null for aws

AWS.yaml

apiVersion: machine.openshift.io/v1beta1
kind: MachineSet
metadata:
  annotations:
    machine.openshift.io/GPU: "0"
    machine.openshift.io/memoryMb: "8192"
    machine.openshift.io/vCPU: "2"
  creationTimestamp: "2020-07-13T06:01:25Z"
  generation: 1
  labels:
    machine.openshift.io/cluster-api-cluster: pmali1307-bls8p
  managedFields:
  - apiVersion: machine.openshift.io/v1beta1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:labels:
          .: {}
          f:machine.openshift.io/cluster-api-cluster: {}
      f:spec:
        .: {}
        f:replicas: {}
        f:selector:
          .: {}
          f:matchLabels:
            .: {}
            f:machine.openshift.io/cluster-api-cluster: {}
            f:machine.openshift.io/cluster-api-machineset: {}
        f:template:
          .: {}
          f:metadata:
            .: {}
            f:labels:
              .: {}
              f:machine.openshift.io/cluster-api-cluster: {}
              f:machine.openshift.io/cluster-api-machine-role: {}
              f:machine.openshift.io/cluster-api-machine-type: {}
              f:machine.openshift.io/cluster-api-machineset: {}
          f:spec:
            .: {}
            f:metadata: {}
            f:providerSpec:
              .: {}
              f:value:
                .: {}
                f:ami: {}
                f:apiVersion: {}
                f:blockDevices: {}
                f:credentialsSecret: {}
                f:deviceIndex: {}
                f:iamInstanceProfile: {}
                f:instanceType: {}
                f:kind: {}
                f:metadata: {}
                f:placement: {}
                f:securityGroups: {}
                f:subnet: {}
                f:tags: {}
                f:userDataSecret: {}
      f:status: {}
    manager: cluster-bootstrap
    operation: Update
    time: "2020-07-13T06:01:25Z"
  - apiVersion: machine.openshift.io/v1beta1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          .: {}
          f:machine.openshift.io/GPU: {}
          f:machine.openshift.io/memoryMb: {}
          f:machine.openshift.io/vCPU: {}
    manager: machine-controller-manager
    operation: Update
    time: "2020-07-13T06:13:06Z"
  - apiVersion: machine.openshift.io/v1beta1
    fieldsType: FieldsV1
    fieldsV1:
      f:status:
        f:availableReplicas: {}
        f:fullyLabeledReplicas: {}
        f:observedGeneration: {}
        f:readyReplicas: {}
        f:replicas: {}
    manager: machineset-controller
    operation: Update
    time: "2020-07-13T06:16:40Z"
  name: miyadav-2307-zpd9c-new 
  namespace: openshift-machine-api
  resourceVersion: "17926"
  selfLink: /apis/machine.openshift.io/v1beta1/namespaces/openshift-machine-api/machinesets/pmali1307-bls8p-worker-us-east-2a
  uid: aa3035fc-133e-4682-9733-2eaa629f82ca
spec:
  replicas: 1
  selector:
    matchLabels:
      machine.openshift.io/cluster-api-cluster: miyadav-2307-zpd9c
      machine.openshift.io/cluster-api-machineset: miyadav-2307-zpd9c-new
  template:
    metadata:
      labels:
        machine.openshift.io/cluster-api-cluster: miyadav-2307-zpd9c
        machine.openshift.io/cluster-api-machine-role: worker
        machine.openshift.io/cluster-api-machine-type: worker
        machine.openshift.io/cluster-api-machineset: miyadav-2307-zpd9c-new
    spec:
      metadata: {}
      providerSpec:
        value:
          ami:
            id: ami-0763a9bebd98ae80f
          placement:
            availabilityZone: us-east-2a