Description of problem:
One of diskmaker-discovery pod is not deleted after delete the localvolumediscovery instance

Version-Release number of selected component (if applicable):
4.6.0-0.nightly-2020-08-16-072105
local-storage-operator.4.6.0-202008111832.p0 

How reproducible:
1 time

Steps to Reproduce:
1.Deploy LSO
2.Create Localvolumediscovery instance
3.All required pods are running.
4.Delete the localvolumeddiscovery
5.One of pod diskmaker-discovery is not deleted
6.Re-create localvolumediscovery, 3 pods of diskmaker-discovery are running.

oc get pods -o wide
NAME                                      READY   STATUS    RESTARTS   AGE     IP             NODE                                         NOMINATED NODE   READINESS GATES
diskmaker-discovery-6b7gq                 1/1     Running   0          11m     10.128.2.156   ip-10-0-137-29.us-east-2.compute.internal    <none>           <none>
diskmaker-discovery-fl4kq                 1/1     Running   0          25h     10.131.0.21    ip-10-0-178-125.us-east-2.compute.internal   <none>           <none>
diskmaker-discovery-k2ztb                 1/1     Running   0          11m     10.131.0.38    ip-10-0-178-125.us-east-2.compute.internal   <none>           <none>
diskmaker-discovery-nzrb7                 1/1     Running   0          11m     10.129.2.33    ip-10-0-206-82.us-east-2.compute.internal    <none>           <none>


$ oc get pod -n openshift-local-storage --show-labels
NAME                                      READY   STATUS    RESTARTS   AGE     LABELS
diskmaker-discovery-6b7gq                 1/1     Running   0          57m     app=diskmaker-discovery,controller-revision-hash=7cd6787664,pod-template-generation=3
diskmaker-discovery-fl4kq                 1/1     Running   0          26h     app=diskmaker-discovery,controller-revision-hash=7587f56bd,pod-template-generation=1
diskmaker-discovery-k2ztb                 1/1     Running   0          58m     app=diskmaker-discovery,controller-revision-hash=7cd6787664,pod-template-generation=3
diskmaker-discovery-nzrb7                 1/1     Running   0          57m     app=diskmaker-discovery,controller-revision-hash=7cd6787664,pod-template-generation=3

oc logs pod/local-storage-operator-68f4dd987f-wcp5m 
{"level":"error","ts":1597740923.8552113,"logger":"controller-runtime.controller","msg":"Reconciler error","controller":"localvolumediscovery-controller","request":"openshift-local-storage/auto-discover-devices","error":"running 2 out of 3 discovery daemons","stacktrace":"github.com/go-logr/zapr.(*zapLogger).Error\n\t/go/src/github.com/openshift/local-storage-operator/vendor/github.com/go-logr/zapr/zapr.go:128\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/src/github.com/openshift/local-storage-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:258\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/src/github.com/openshift/local-storage-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:232\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/go/src/github.com/openshift/local-storage-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:211\nk8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/go/src/github.com/openshift/local-storage-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:152\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/src/github.com/openshift/local-storage-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:153\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/go/src/github.com/openshift/local-storage-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88"}


Actual results:
Pod diskmaker-discovery-fl4kq is not deleted when delete localvolummediscovery

Expected results:
Pod diskmaker-discovery-fl4kq should be deleted when delete localvolummediscovery

Master Log:

Node Log (of failed PODs):

PV Dump:

PVC Dump:

StorageClass Dump (if StorageClass used by PV/PVC):

Additional info: