Description of problem:
When I deleted the clusteroperator network resource by manual. And it will be recreated it in about 3 mins by network operator pod. but the status of 'FAILING' become nil.

# oc get clusteroperator network
NAME      VERSION                             AVAILABLE   PROGRESSING   FAILING   SINCE
network   4.0.0-0.nightly-2019-03-18-200009   True        False                   2m28s

Version-Release number of selected component (if applicable):
4.0.0-0.nightly-2019-03-18-200009

How reproducible:
always

Steps to Reproduce:
1. Delete the clusteroperator network resource
   oc delete clusteroperator network
2. Check the clusteroperator network will be recovered in 3 mins
   oc get clusteroperator 
3. Check the logs of network operator pod
   

Actual results:
step2: The column of 'FAILING' is nil

# oc get clusteroperator network
NAME      VERSION                             AVAILABLE   PROGRESSING   FAILING   SINCE
network   4.0.0-0.nightly-2019-03-18-200009   True        False                   2m28s

step3: Logs from the network operator logs:

2019/03/20 07:09:53 Created ClusterOperator with status:
conditions:
- lastTransitionTime: "2019-03-20T07:09:53Z"
  status: "False"
  type: Progressing
- lastTransitionTime: "2019-03-20T07:09:53Z"
  status: "True"
  type: Available
extension: null
versions:
- name: operator
  version: 4.0.0-0.nightly-2019-03-18-200009
2019/03/20 07:09:58 Reconciling update to openshift-sdn/sdn-controller
2019/03/20 07:09:58 Updated ClusterOperator with status:
conditions:
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "False"
  type: Progressing
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "True"
  type: Available
extension: null
versions:
- name: operator
  version: 4.0.0-0.nightly-2019-03-18-200009
2019/03/20 07:10:00 Reconciling update to openshift-sdn/ovs
2019/03/20 07:10:00 Updated ClusterOperator with status:
conditions:
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "False"
  type: Progressing
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "True"
  type: Available
extension: null
versions:
- name: operator
  version: 4.0.0-0.nightly-2019-03-18-200009
2019/03/20 07:10:03 Reconciling update to openshift-sdn/sdn
2019/03/20 07:10:03 Updated ClusterOperator with status:
conditions:
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "False"
  type: Progressing
- lastTransitionTime: "2019-03-20T07:09:58Z"
  status: "True"
  type: Available
extension: null
versions:
- name: operator
  version: 4.0.0-0.nightly-2019-03-18-200009

Expected results:

the status of 'FAILING' should have the correct value.

Additional info: