Description of problem:

With Cluster Logging 5.8, spec.collection.logs.* is deprecated in favor of spec.collection.* in Cluster Logging instance

(The same below happens if resources are added) 

This:
================================
    collection:
    type: fluentd 
    fluentd: 
      nodeSelector:
        node-role.kubernetes.io/master: ""
      tolerations:
      - operator: Exists

Ends up like this after saving:
================================
  collection:
    type: fluentd 
    fluentd: {}

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

Cluster logging 5.8

How reproducible:

Everywhere

Steps to Reproduce:
1> Install Cluster logging 5.8 
2> Create CL where nodeSelector, tolerations, resources are added for spec.collection.fluentd

Actual results:

Configurations added do not stick even if all indentations and syntax are correct.

Expected results:

Configurations to stack if all indentations and syntax are correct