Description of problem:

In the API is observed that available to be defined `clusterlogforwarder.spec.outputs.http.timeout`:

$ oc explain clusterlogforwarder.spec.outputs.http.timeout
GROUP:      logging.openshift.io
KIND:       ClusterLogForwarder
VERSION:    v1

FIELD: timeout <integer>

DESCRIPTION:
    Timeout specifies the Http request timeout in seconds. If not set, 10secs is
    used.

If the collector type is `fluentd`:

$ oc get clusterlogging instance -o jsonpath='{.spec.collection.type}'
fluentd

And defined `clusterlogforwarder.spec.outputs.http.timeout` for an `HTTP` output:

$ oc get clusterlogforwarder instance -o jsonpath='{.spec.outputs[?(.type=="http")]}'|jq
{
  "http": {
    "timeout": 20
  },
  "name": "httpout-app",
  "type": "http",
  "url": "http://server.example.com"
}

The variable is not honored as it doesn't defined in the fluentd configuration generated by the operator:

$ oc get cm collector-config -o json|jq -r '.data."fluent.conf"'
...
  <match **>
    @type http
    endpoint http://server.example.com
    http_method post
    content_type application/x-ndjson

    <buffer>

Version-Release number of selected component (if applicable):

$ oc get csv -n openshift-logging
NAME                                      DISPLAY                            VERSION   REPLACES                                  PHASE
cluster-logging.v5.8.4                    Red Hat OpenShift Logging          5.8.4     cluster-logging.v5.8.3                    Succeeded

How reproducible:

Always

Steps to Reproduce:

1. Deploy Cluster Logging 5.8 latest z version
2. Configure clusterLogging being the collector type fluentd

   $ oc get clusterlogging instance -o jsonpath='{.spec.collection.type}'
   fluentd
   

3. Configure in the clusterLogForwarder an output defining `spec.outputs.<output>.http.timeout`

   apiVersion: logging.openshift.io/v1
   kind: ClusterLogForwarder
   metadata:
     name: instance 
     namespace: openshift-logging 
   spec:
     outputs:
       - name: httpout-app
         type: http
         url: http://server.example.com
         http:
           timeout: 20
     pipelines:
      - name: all 
        inputRefs:
        - infrastructure
        - application
        outputRefs:
         - httpout-app
   

Actual results:

The `clusterlogforwarder.spec.outputs.http.timeout` is not translated to the fluentd configuration

Expected results:

The `clusterlogforwarder.spec.outputs.http.timeout` is translated to the fluentd configuration