Description of problem:
Some machines are missing type, region and zone labels after installation.

Version-Release number of selected component (if applicable):
4.10.1

How reproducible:
Always

Steps to Reproduce:
1. Create a new cluster on osp
2.
3.

Actual results:
Checked several clusters, each cluster has only two worker machines with type, region and zone labels.
$ oc get machine
NAME PHASE TYPE REGION ZONE AGE
zhsun34osp2-hvxjc-master-0 Running 45m
zhsun34osp2-hvxjc-master-1 Running 45m
zhsun34osp2-hvxjc-master-2 Running 45m
zhsun34osp2-hvxjc-worker-0-77ct6 Running 39m
zhsun34osp2-hvxjc-worker-0-jt6qt Running ci.m1.xlarge regionOne nova 39m
zhsun34osp2-hvxjc-worker-0-mrlcb Running ci.m1.xlarge regionOne nova 39m

$ oc get machine --show-labels
NAME PHASE TYPE REGION ZONE AGE LABELS
zhsun34osp2-hvxjc-master-0 Running 46m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=master,machine.openshift.io/cluster-api-machine-type=master
zhsun34osp2-hvxjc-master-1 Running 46m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=master,machine.openshift.io/cluster-api-machine-type=master
zhsun34osp2-hvxjc-master-2 Running 46m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=master,machine.openshift.io/cluster-api-machine-type=master
zhsun34osp2-hvxjc-worker-0-77ct6 Running 40m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=worker,machine.openshift.io/cluster-api-machine-type=worker,machine.openshift.io/cluster-api-machineset=zhsun34osp2-hvxjc-worker-0
zhsun34osp2-hvxjc-worker-0-jt6qt Running ci.m1.xlarge regionOne nova 40m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=worker,machine.openshift.io/cluster-api-machine-type=worker,machine.openshift.io/cluster-api-machineset=zhsun34osp2-hvxjc-worker-0,machine.openshift.io/instance-type=ci.m1.xlarge,machine.openshift.io/region=regionOne,machine.openshift.io/zone=nova
zhsun34osp2-hvxjc-worker-0-mrlcb Running ci.m1.xlarge regionOne nova 40m machine.openshift.io/cluster-api-cluster=zhsun34osp2-hvxjc,machine.openshift.io/cluster-api-machine-role=worker,machine.openshift.io/cluster-api-machine-type=worker,machine.openshift.io/cluster-api-machineset=zhsun34osp2-hvxjc-worker-0,machine.openshift.io/instance-type=ci.m1.xlarge,machine.openshift.io/region=regionOne,machine.openshift.io/zone=nova

Expected results:
All machines show type, region and zone labels.

Additional info: