For mcd_config_drift showing metric even after resolving the issue

1. Force the change which will create config drift in node
$ oc debug node/ip-10-0-117-156.us-west-1.compute.internal -- chroot /host bash -c "echo '# CONFIG DRIFT TEST PR5632' >> /etc/kubernetes/kubelet.conf"
   
2. Check MCP is degraded
$ oc get mcp
NAME     CONFIG                                             UPDATED   UPDATING   DEGRADED   MACHINECOUNT   READYMACHINECOUNT   UPDATEDMACHINECOUNT   DEGRADEDMACHINECOUNT   AGE
master   rendered-master-f949a0b4b582fb2000326c35f0b2cebc   True      False      False      3              3                   3                     0                      146m
worker   rendered-worker-97364c44c883a6f8dc726d2053c88d2a   False     True       True       3              2                   2                     1                      146m     
3. Check config drift is produced oc exec -n openshift-machine-config-operator machine-config-daemon-jc2cm  -- \
    curl -s localhost:8797/metrics 2>&1 | grep mcd_config_drift
# HELP mcd_config_drift timestamp for config drift
# TYPE mcd_config_drift gauge
mcd_config_drift 1.7731343462747185e+09

4. Revert the changes
$ oc debug node/ip-10-0-117-156.us-west-1.compute.internal --    chroot /host bash -c "sed -i '/# CONFIG DRIFT TEST PR5632/d' /etc/kubernetes/kubelet.conf"

5. Check MCP is no more degrade
$ oc get mcp
NAME     CONFIG                                             UPDATED   UPDATING   DEGRADED   MACHINECOUNT   READYMACHINECOUNT   UPDATEDMACHINECOUNT   DEGRADEDMACHINECOUNT   AGE
master   rendered-master-f949a0b4b582fb2000326c35f0b2cebc   True      False      False      3              3                   3                     0                      149m
worker   rendered-worker-97364c44c883a6f8dc726d2053c88d2a   True      False      False      3              3                   3                     0                      149m

6. Able to still see the mcd_config_drift showing the metrics
$ oc exec -n openshift-machine-config-operator machine-config-daemon-jc2cm  -- \
    curl -s localhost:8797/metrics 2>&1 | grep mcd_config_drift
# HELP mcd_config_drift timestamp for config drift
# TYPE mcd_config_drift gauge
mcd_config_drift 1.7731344167761781e+09

     mcd_metric_config should be showing zero config drift after resolving 
$ oc exec -n openshift-machine-config-operator machine-config-daemon-jc2cm  -- \     curl -s localhost:8797/metrics 2>&1 | grep mcd_config_drift # HELP mcd_config_drift timestamp for config drift # TYPE mcd_config_drift gauge mcd_config_drift 0