Description of problem:
Installed the kubefed operator with "All namespaces on the cluster" mode, the operator installed successfully, but when trying to deploy kubefed control plane under federation-system namespace, the kubefed control plane deployment failed.

Version-Release number of selected component (if applicable):
$ oc get clusterversion
NAME      VERSION                             AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.2.0-0.nightly-2019-07-22-202159   True        False         4h30m   Cluster version is 4.2.0-0.nightly-2019-07-22-202159
kubefed-operator: v0.1.0

How reproducible:
100%


Steps to Reproduce:
1. Login into web console with kubeadmin user
2. Install kubefed operator with "All namespaces on the cluster" mode(Operators->OperatorHub)
3. Create a project federation-system(Home->Projects)
4. Create a kubefed instance in federation-system namespace
apiVersion: operator.kubefed.io/v1alpha1
kind: KubeFed
metadata:
  name: kubefed
  namespace: federation-system
spec:
  scope: Cluster
5. Check deployment of kubefed control plane


Actual results:
kubefed control plane is not installed as expected.
$ oc get deployment -n federation-system
No resources found.


Expected results:
kubefed control plane is installed successfully.


Additional info:
1. kubefed operator is installed under openshift-operators namespace
$ oc get deployment -n openshift-operators
NAME               READY   UP-TO-DATE   AVAILABLE   AGE
kubefed-operator   1/1     1            1           12m

2. If creating kubefed instance under openshift-operators namespace, kubefed control plane can be deployed under openshift-operators namespace
$ oc get kubefed kubefed -n openshift-operators -oyaml
apiVersion: operator.kubefed.io/v1alpha1
kind: KubeFed
metadata:
  creationTimestamp: "2019-07-23T07:08:10Z"
  generation: 1
  name: kubefed
  namespace: openshift-operators
  resourceVersion: "93668"
  selfLink: /apis/operator.kubefed.io/v1alpha1/namespaces/openshift-operators/kubefeds/kubefed
  uid: a10c68c3-ad18-11e9-b79b-0a2401d2c6e6
spec:
  scope: Cluster
status:
  version: 0.1.0

$ oc get deployment -n openshift-operators
NAME                         READY   UP-TO-DATE   AVAILABLE   AGE
kubefed-controller-manager   2/2     2            2           36s
kubefed-operator             1/1     1            1           13m