RFE | Enable Configuration of MTU after Cluster Creation

1. Proposed title of this feature request

• Configurable MTU after Cluster Creation
  2. What is the nature and description of the request?
• Highly visible customer is requesting the ability to alter MTU configuration after cluster creation
  3. Why does the customer need this? (List the business requirements here)
• Customer is experiencing high levels of packet fragmentation and as the MTU values currently set are extremely high, they need to have the value drastically altered. This is not yet supported after cluster creation and rebuilding the cluster is not advisable.
  4. List any affected packages or components.
• N/A

Ticket is related to https://issues.redhat.com/browse/OHSS-9586