Description of problem:
ansible-service-broker can not fetch clusterserviceclass from asb pod.
curl -k -H "Authorization: Bearer `oc serviceaccounts get-token asb-client`" https://$(oc get routes -n openshift-ansible-service-broker --no-headers | awk '{print $2}')/ansible-service-broker/v2/catalog
{
  "paths": [
    "/apis",
    "/healthz",
    "/healthz/ping",
    "/healthz/poststarthook/generic-apiserver-start-informers",
    "/metrics",
    "/osb/"
  ]

Version-Release number of selected component (if applicable):
asb: 1.3.8
openshift-ansible-3.11.0-0.13.0

How reproducible:
always

Steps to Reproduce:
1. set asb with avalible registry, it can fetch apbs successfully.
# oc get bundles
NAME                               AGE
0300d1ae1841c23a9df0a179ad0605fd   2h
0e5dbb6592fec99057f94fbb095ec558   2h
48749329dd289591e11ba737f15fc71b   2h
bd8dff760b959264f3ab38d42ba5e7a8   2h

2. relist service catalog by : apb catalog relist -n ansible-service-broker
checking clusterserviceclass

# oc get clusterserviceclass
No resources found.

Actual results:
No resources found.

# oc describe clusterservicebroker ansible-service-broker
Name:         ansible-service-broker
Namespace:    
Labels:       <none>
Annotations:  <none>
API Version:  servicecatalog.k8s.io/v1beta1
Kind:         ClusterServiceBroker
Metadata:
  Creation Timestamp:  2018-08-13T05:39:49Z
  Finalizers:
    kubernetes-incubator/service-catalog
  Generation:        1
  Resource Version:  29548
  Self Link:         /apis/servicecatalog.k8s.io/v1beta1/clusterservicebrokers/ansible-service-broker
  UID:               4b92b10b-9ebb-11e8-9c5b-0a580a80001b
Spec:
  Auth Info:
    Bearer:
      Secret Ref:
        Name:       asb-client
        Namespace:  openshift-ansible-service-broker
  Ca Bundle:        L...TS9MSGsvN295RT0KLS0tLS1FTkQgQ0VSVElGSUNBVEUtLS0tLQo=
  Relist Behavior:  Duration
  Relist Requests:  5
  URL:              https://asb.openshift-ansible-service-broker.svc:1338/osb
Status:
  Conditions:
    Last Transition Time:  2018-08-13T05:39:49Z
    Message:               Error fetching catalog.Error getting broker catalog: Status: 403; ErrorMessage: <nil>; Description: <nil>; ResponseError: <nil>
    Reason:                ErrorFetchingCatalog
    Status:                False
    Type:                  Ready
  Operation Start Time:    2018-08-13T05:39:50Z
  Reconciled Generation:   0
Events:
  Type     Reason                Age                From                                Message
  ----     ------                ----               ----                                -------
  Warning  ErrorFetchingCatalog  24s (x14 over 1m)  service-catalog-controller-manager  Error getting broker catalog: Status: 403; ErrorMessage: <nil>; Description: <nil>; ResponseError: <nil>

Expected results:
get clusterserviceclass successfully

Additional info:
osb api return 403

# curl -k -H "Authorization: Bearer `oc serviceaccounts get-token asb-client`" https://$(oc get routes -n openshift-ansible-service-broker --no-headers | awk '{print $2}')/osb/v2/catalog
Error from server (NotFound): serviceaccounts "asb-client" not found
{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {
    
  },
  "status": "Failure",
  "message": "forbidden: User \"system:anonymous\" cannot get path \"/osb/v2/catalog\": no RBAC policy matched",
  "reason": "Forbidden",
  "details": {
    
  },
  "code": 403

Found some related PR: 
https://github.com/openshift/ansible-service-broker/pull/1029
https://github.com/openshift/openshift-ansible/pull/9510