After configure external odic provider in authentication cluster, cannot login to console, always endless loop to redirect to console. 
    

    v 4.20
    

     always
    

    1. Install external identity provider and configure callbackURL : https://<console_route>/auth/callback
    2. Login to openshift  and enable exteral oidc feature
    $oc patch featuregate/cluster -p   '{"spec":{"featureSet": "TechPreviewNoUpgrade"}}'  --type=merge
     
    3. Create secret with  client secret
        $oc create secret generic gitlab-secret --from-literal=clientSecret=<client-secret> -n openshift-config

    4. Configure gitlab as oidc provider 
```
  spec:
  oidcProviders:
  - claimMappings:
      groups:
        claim: groups
        prefix: 'oidc-groups-test:'
      username:
        claim: "email"
        prefixPolicy: "Prefix"
        prefix:
          prefixString: "oidc-user-test:"
    name: gitlab-oidc
    issuer:
      issuerURL: "https://gitlab.com"
      audiences:
      - "<CONSOLE_CLIENT_ID"
    oidcClients:
    - clientID: "<CLIENT_ID>"
      clientSecret:
        name: "gitlab-secret"
      componentName: console
      componentNamespace: openshift-console
   type: "OIDC"
```
     5. Login with openshift-console,  always  redirect  page with a dead loop, 

      6.Check apiserver log：
Unable to authenticate the request" err="[invalid bearer token, oidc: parse username claims \"email\": claim not present]"
    

    Expected results:{code:none}
   Should login in console successfully